Stranger by Night (1994)

Detective Bobby Corcoran (Steven Bauer) and his partner, Detective Larson (Michael Parks), are on the hunt for a vicious serial killer in this tense police thriller. As the murderous villain stalks the city streets leaving carnage in his wake, Corcoran begins to experience blackouts and sudden fits of anger. As the detectives pursue the case, they uncover evidence suggesting that one of them may be responsible for the mysterious deaths.