The Impostor(2012)

Marta works as a trainer at a fitness club. She meets Vitaly, and a romance begins between them. But Marta starts to suspect that Vitaly is cheating on her with another woman. Driven by jealousy, she begins to follow him and unexpectedly discovers that Vitaly is not a manager at all, but… a hitman! Marta reports him to the police, but they don’t believe her. Now she is forced to save herself from her bloodthirsty lover on her own…