Subspecies is a Romanian-American direct-to-video horror film series produced by Full Moon Studios and Castel Film Studios. The series ran from 1991 to 2023, and followed the exploits of the vampire Radu Vladislas, portrayed by Anders Hove, and his efforts to turn Michelle Morgan into his fledgling. A spin-off film, Vampire Journals, was released in 1997, which featured characters that would go on to appear in the fourth installment. Ted Nicolaou wrote and directed all six films, including the spin-off.