Vampires of Warsaw (Polish: Wampiry Warszawy) is a 1925 Polish silent crime film directed by Wiktor Biegański and starring Oktawian Kaczanowski, Halina Labedzka and Maria Balcerkiewiczówna. It was Biegański's most popular film, and displayed the influence of Soviet cinema on his work.^[2] The film is considered lost, so it's difficult to describe the plot in detail, but the film appears to have been a murder mystery whodunit and did not actually feature any vampires of the supernatural variety.

Vampires of Warsaw
A scene from the film.
Directed by	Wiktor Biegański
Written by	Wiktor Biegański (based on his own stage play)
Starring	Oktawian Kaczanowski Halina Labedzka Maria Balcerkiewiczówna Igo Sym
Cinematography	Ferdynand Vlassak Antoni Wawrzyniak
Production company	Merkurfilm
Release date	28 October 1925
Running time	36 minutes[1]
Country	Poland
Languages	Silent Polish intertitles

Actor Igo Sym, who later shared billing in films with top name stars like Marlene Dietrich, became a Nazi informant in WWII and turned in a number of fellow Polish actors and theater owners who were aligned with the Resistance forces in Poland. In 1941, some Polish freedom fighters assassinated Sym, and the Nazis retaliated by executing 21 hostages and sending dozens of others to Auschwitz.^[3]