Writer-director Doug Rao is set to make his feature debut with “Dirty Boy,” a psychological thriller featuring Graham McTavish (“House of the Dragon”), according to Deadline’s report this afternoon.

Joining McTavish in the cast are Stan Steinbichler (“Zero Chill”), Susie Porter (“Gold”), and Honor Gillies (“The Hunger Games: The Ballad of Songbirds and Snakes”). The film, which has recently wrapped filming, follows the story of Isaac (played by Steinbichler), a reclusive schizophrenic who discovers that he is being framed for a series of ritualistic murders. To prove his innocence, he must uncover a sinister cult and save their next victim. McTavish and Porter portray the ruthless cult leaders, while Gillies plays a troubled member named Hope.

Additional cast members include Alice Lucy, Katharina Scheuba, Ruaridh Adlington, Ava Merson-O’Brien, Michael Kodi Farrow, and Olivia Chenery.

The film is produced by Giles Alderson (“Three Day Millionaire,” “The Dare”), Sarah-Anne Grill (“Solitary”), and Marek Lichtenberg (“The Final 45”).