Psychophonia (2016)

After her husband is violently murdered and mutilated, a woman turns to a paranormal investigator to delve into eerie phone calls she’s been receiving from his device. As they probe deeper, her search uncovers a shocking secret—her husband led a double life within a clandestine swinging community. This revelation not only complicates her grief but also propels her into a world of hidden desires and betrayal. As she navigates this dark labyrinth, the truth behind the murder becomes increasingly entwined with the secrets of her husband's past.