Also starring David Conrad (“Ghost Whisperer”), the psychological thriller Basic Psych arrives on Digital April 21 via Filmhub.

Michael Cerveris stars as Dr. Stuart Prince, a psychiatrist who takes on a deeply unsettling new patient: Dan Riviello (Conrad), an elementary school principal plagued by violent nightmares. But those nightmares come with a horrifying confession—Dan claims he’s responsible for an unsolved double murder.

Bound by ethics that prevent him from reporting past crimes, Stuart is forced into an impossible position. Against his better judgment, he continues treating Dan… even as the sessions grow darker and more dangerous.

What begins as therapy spirals into something far more sinister, pulling Stuart and his family into a tense cat-and-mouse game. As control slips and paranoia builds, Dan drags everyone around him into a shadowy web of manipulation, obsession, and deadly uncertainty.

The cast is rounded out by Cotter Smith (“Mindhunter”) and Siena Goines (“Criminal Minds”).

The film is directed by Melissa Martin from a script by James Tucker, with Janet D. Smith and Jeanne Baseman producing.

“What a journey Basic Psych has been,” said Martin and Tucker. “Michael Cerveris and David Conrad made perfect foes. We’re excited for fans of psychological thrillers to try and unravel this one.”