Zlá krev

{{Short description|Czechoslovak historical television series}}

{{Use dmy dates|date=June 2021}}

{{Infobox television

| genre = Historical drama

| runtime = 66 minutes

| writer = Otto Zelenka

| director = František Filip

| country = Czechoslovakia

| first_aired = {{Start date|1986|df=y}}

| last_aired =

| num_episodes = 7

| channel = Czechoslovak Television

| related = Sňatky z rozumu

}}

Zlá krev (Evil blood) is a Czechoslovak television historical mini-series which was first broadcast in 1986. The programme was directed by František Filip. The story is based on five books written by Vladimír Neff: "Sňatky z rozumu" (Marriages of convenience), "Císařské fialky" (Imperial violets), "Zlá krev" (Evil blood), "Veselá vdova" (Merry Widow) and "Královský vozataj" (Royal charioteer) – all creating the family saga and loosely telling the story of the ancestors of Neff family through the 19th century.