The Man and the Challenge

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{{Episode list

|EpisodeNumber=1

|Title=The Sphere of No Return

|DirectedBy=Andrew Marton

|WrittenBy=Lee Erwin

|OriginalAirDate={{Start date|1959|9|12}}

|ShortSummary= Barton joins two other man in testing human stamina in a balloon at very high altitudes. After one of the men panics and fails the required standards, a woman replaces him — and the other man reacts negatively to her assignment to the balloon crew. Guest stars: Paul Burke, Raymond Bailey, Keith Vincent, and Frank Kirby.

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|EpisodeNumber=2

|Title=Maximum Capacity

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|OriginalAirDate={{Start date|1959|9|19}}

|ShortSummary=To determine the best way to train people for high-security jobs in the Arctic, Barton sends two men into the Arctic to test their endurance in extreme levels of cold and isolation. Guest stars: James Best, Mike Masters, Robert Conrad, Paula Raymond, and Robert Karnes.

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|EpisodeNumber=3

|Title=Odds Against Survival

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|OriginalAirDate={{Start date|1959|9|26}}

|ShortSummary=Barton investigates the human capacity for living for an extended period in a small enclosed space, starting with an underwater habitat. Guest stars: Robert Clarke, Bethel Leslie, and Whit Bissell.

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|EpisodeNumber=4

|Title=Sky Diving

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|OriginalAirDate={{Start date|1959|10|3}}

|ShortSummary=The U.S. Government is interested in the effects of gravity on potential astronauts, so Barton goes to France to study it by learning free-fall parachuting from Suzanne and Georges Bolet, a brother-and-sister skydiving team. Guest stars: Danielle Aubrey, John Van Dreelen, and Alberto Morin.

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|EpisodeNumber=5

|Title=Experiments in Terror

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|OriginalAirDate={{Start date|1959|10|10}}

|ShortSummary=David Mumford is a brilliant, well-known scientist who holds a grudge against Barton, so he and his secretary plot to kill the unsuspecting Barton and make it look like his death was an accident. Guest stars: Otto Kruger, Julia Adams, and Logan Field.

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|EpisodeNumber=6

|Title=Invisible Force

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|WrittenBy= Paul King

|OriginalAirDate={{Start date|1959|10|17}}

|ShortSummary=An official from Washington, D.C., asks Barton to form a clandestine athletic unit to free three Americans being held captive in a hostile country. Guest stars: Debra Paget, William Conrad, Carol Thurston, and Patrick Waltz.

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|EpisodeNumber=7

|Title=Escape from Nepal

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|OriginalAirDate={{Start date|1959|10|24}}

|ShortSummary=A new drug called U2-21 is intended to increase a human's ability to retain oxygen at high altitudes, and to see how well it works, Barton puts a group of mountaineers through a rigorous test in the Rocky Mountains before sending them to the Himalayas for a final test. Guest stars: Myron Healy, John Maxwell, and Joan Granville.

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|EpisodeNumber=8

|Title=Border to Border

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|OriginalAirDate={{Start date|1959|10|31}}

|ShortSummary=To prove that a team can overcome obstacles which one man cannot handle alone, Barton enters two jet pilots who are antagonistic toward each another in a Mexican auto race in which they face a grueling challenge from a professional driver. Guest stars: Edward Kemmer and Don Kennedy.

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|EpisodeNumber=9

|Title=Trial By Fire

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|OriginalAirDate={{Start date|1959|11|7}}

|ShortSummary=Barton and two newly-married geologists go to an active volcano to test a new type of fire suit — and almost lose their lives. Guest stars: H. M. Wynant and Joyce Taylor.

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|EpisodeNumber=10

|Title=White Out

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|OriginalAirDate={{Start date|1959|11|14}}

|ShortSummary=Hoping to develop a way to freeze astronauts to help them withstand interplanetary travel, Barton travels to Antarctica and researches hypothermia by reducing the body temperature of two doctors. Guest stars: Jan Shepard, Philip Terry, and Don Eitner.

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|EpisodeNumber=11

|Title=The Breaking Point

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|OriginalAirDate={{Start date|1959|11|28}}

|ShortSummary=Barton conducts a test in which a volunteer is subjected to psychological torment while sealed in a cell for 30 days in order to find his breaking point. Guest stars: Alfred Ryder, John Marley, and Tony Monaco.

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|EpisodeNumber=12

|Title=Jungle Survival

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|OriginalAirDate={{Start date|1959|12|5}}

|ShortSummary=Barton travels to the Amazon Basin to test jungle survival techniques while searching for four missing aviators. Guest stars: Dean Harens, Mike Masters, and Marcia Henderson.

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|EpisodeNumber=13

|Title=I've Killed Seven Men

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|OriginalAirDate={{Start date|1959|12|12}}

|ShortSummary=Barton selects a ski patrol sergeant as the subject of an experiment to see how long a human can last without sleep. Guest stars: Lin McCarthy and Jean Allison.

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|EpisodeNumber=14

|Title=Man Without Fear

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|OriginalAirDate={{Start date|1959|12|19}}

|ShortSummary=Barton administers a dose of an experimental mixture of chemicals intended to reduce fear in humans called LSD to a firefighter at the scene of a raging forest fire to see if it will make him more courageous. The man exhibits greater bravery, but the experiment demonstrates that fear is a necessary part of courage. Guest stars: John Day, Tracey Roberts, Frank Gerstle, and Nick Nicholson.

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|EpisodeNumber=15

|Title=The Visitors

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|OriginalAirDate={{Start date|1959|12|26}}

|ShortSummary=Barton and two of his associates use restricted U.S. Government property to test the best type of clothing for use on other planets. Guest stars: Bert Remsen, Fuzzy Knight, Robert J. Wilke, Len Lesser, and Jack Ging.

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|EpisodeNumber=16

|Title=The Storm

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|OriginalAirDate={{Start date|1960|1|2}}

|ShortSummary=Barton is asked to clear the reputation of a marine scientist who died under mysterious circumstances. Guest stars: Fred Gabourie, Roberta Haynes, Lee Johnson, and Byron Morrow.

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|EpisodeNumber=17

|Title=Killer River

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|OriginalAirDate={{Start date|1960|1|9}}

|ShortSummary=Barton rescues a pilot who became caught on a cliff above the Colorado River after parachuting from his plane. Guest stars: John Archer and Michael Keith.

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|EpisodeNumber=18

|Title=Rodeo

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|OriginalAirDate={{Start date|1960|1|23}}

|ShortSummary=A female rodeo rider helps Barton investigate the effects of a new rocket belt. Guest stars: Ann Robinson, Myron Healy, Neil Grant, Larry Mann, and Chuck Parkerson.

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|EpisodeNumber=19

|Title=The Windowless Room

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|OriginalAirDate={{Start date|1960|1|30}}

|ShortSummary=After an accomplished test pilot crashes his aircraft, he suffers from a self-induced paralysis that slowly destroys his career and marriage. Barton comes to his aid, using hypnosis to restore his confidence. Guest stars: Jack Ging, Sue Randall, Raymond Bailey, Doris Fesete, and Michael Keith.

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|EpisodeNumber=20

|Title=Nightmare Crossing

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|OriginalAirDate={{Start date|1960|2|6}}

|ShortSummary=Barton uses a difficult crossing in a small boat to test candidates for command positions aboard spacecraft. Guest stars: Keith Larsen, Tony Monaco, Mike Keene, Pat McCaffrie, and Jack Catron.

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|EpisodeNumber=21

|Title=The Lure of Danger

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|OriginalAirDate={{Start date|1960|2|13}}

|ShortSummary=To test his theory that individuals who crave danger may subconsciously want to destroy themselves, Barton goes to the bullfights in Mexico. Guest stars: Miguel Landa, Felipe Turich, Abel Franco, Robert Mercy, and Edward Colmans.

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{{Episode list

|EpisodeNumber=22

|Title=Recovery

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|OriginalAirDate={{Start date|1960|2|20}}

|ShortSummary= After one of Barton's experiments ends in tragedy, a newspaper columnist criticizes his handling of it. Guest stars: Eloise Hardt, John Archer, and Jack Catron.

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|EpisodeNumber=23

|Title=Buried Alive

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|OriginalAirDate={{Start date|1960|2|27}}

|ShortSummary=Barton experiments with yoga to see if it is helpful in averting tragedy. Guest stars: Robert Gothie, Robert Bice, Don Eitner, and Don Harvey.

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{{Episode list

|EpisodeNumber=24

|Title=Recondo

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|OriginalAirDate={{Start date|1960|3|5}}

|ShortSummary=After four escaping convicts kidnap a warden's daughter and take her with them as a hostage, Barton devises a way to free her unharmed. Guest stars: Jack Harris, Marianna Hill, Arvid Nelson, Jay Douglas, and Bern Bassey.

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{{Episode list

|EpisodeNumber=25

|Title=Flying Lab

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|OriginalAirDate={{Start date|1960|3|12}}

|ShortSummary=Barton flies an airplane into a hurricane without informing part of the crew as an experiment to see how fear induced by ignorance of causes can affect human performance. Guest stars: Keith Vincent, Jack Hamilton, Robert Knapp, and Page Slattery.

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|EpisodeNumber=26

|Title=Hurricane Mesa

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|OriginalAirDate={{Start date|1960|3|19}}

|ShortSummary=Barton conducts a test on a pilot to prove to him that he can still have an important function when he is switched from flying to a desk job. Guest stars: Jack Ging and Robert Bice.

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|EpisodeNumber=27

|Title=Astro Female

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|OriginalAirDate={{Start date|1960|3|26}}

|ShortSummary=Barton pits four women against four men to prove that women can perform as well as — and perhaps better than — men as astronauts. Guest stars: Maureen Leeds, Adrienne Hayes, Joan Granville, and Ethel Jensen.

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{{Episode list

|EpisodeNumber=28

|Title=The Extra Sense

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|OriginalAirDate={{Start date|1960|4|2}}

|ShortSummary=Barton parachutes from a high precipice to demonstrate that emotional stress promotes telepathy. Guest stars: Frank Maxwell and Paul Comi.

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{{Episode list

|EpisodeNumber=29

|Title=Man in the Capsule

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|OriginalAirDate={{Start date|1960|4|9}}

|ShortSummary=Barton conducts a test of a survival capsule by locking two men in it while it floats on the surface of the ocean for three days. Guest stars: Darryl Hickman, Fred Beir, Dick Jeffries, and Donald Gamble.

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|EpisodeNumber=30

|Title=The Dropper

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|OriginalAirDate={{Start date|1960|4|23}}

|ShortSummary=A psychopathic killer has rigged the trunk of his car to eject logs onto the highway to kill or injure pursuing motorcycle policemen, so Barton develops a new drug that speeds up human perception so that the motorcycle policemen can maneuver out of the way of the deadly debris and apprehend the killer. Guest stars: Jack O'Brien, Arthur Heller, Jerry Summers, Tyler McVey, Howard McLeod, and Mike Masters.

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{{Episode list

|EpisodeNumber=31

|Title=High Dive

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|OriginalAirDate={{Start date|1960|4|30}}

|ShortSummary=An attractive female Olympic high diver helps Barton test a theory about the cause of a loss of equilibrioception. Guest stars: Olive Sturgess, Charles Alvin Bell, Michael Keith, Vernon Rich, and Charles R. Keene.

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{{Episode list

|EpisodeNumber=32

|Title=Daredevils

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|OriginalAirDate={{Start date|1960|5|7}}

|ShortSummary=In the belief that the secret to survival lies in chemical reactions in the human body, Barton puts the top suit driver through an extremely dangerous test. Guest stars: Don Kennedy, Christine White, Ted Knight, and Doris Fosette.

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{{Episode list

|EpisodeNumber=33

|Title=Shooter McLaine

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|OriginalAirDate={{Start date|1960|5|21}}

|ShortSummary=Ignoring his own physical limits and Barton's warnings, a scientist misreads important test instruments, almost killing Barton. Guest stars: John Milford, Mala Powers, Dick Rich, and Charles Tannen.

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|EpisodeNumber=34

|Title=Early Warning

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|OriginalAirDate={{Start date|1960|5|28}}

|ShortSummary=Barton fears that a single-minded scientist could be working himself to death. Guest stars: Philip Ober, Bethel Leslie, Andy Thompson, and Marshall Kent.

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|EpisodeNumber=35

|Title=Breakoff

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|OriginalAirDate={{Start date|1960|6|4}}

|ShortSummary=Barton tries to help a pilot who experiences excessive anxiety at high altitudes. Guest stars: Karl Swenson and Miranda Jones.

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{{Episode list

|EpisodeNumber=36

|Title=Highway to Danger

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|OriginalAirDate={{Start date|1960|6|11}}

|ShortSummary=Barton researches the phenomenon of highway hypnosis by subjecting himself to driving conditions that have killed five truck drivers. Guest stars: Karen Scott, Hank Patterson, and Barney Biro.

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