While hosting a masked orgy, socialite Scarlet is murdered by an unknown killer. Hired to investigate the case is put upon private dick Dexter Sleuth, who immediately takes to interviewing the soiree’s various guests.

As snow falls outside, Aggie tries desperately to remember the circumstances under which she met her companion. As she plays through in her mind a series of possible scenarios, only to dismiss each as a false past, she inadvertently begins to reveal an increasingly dark portrait of her true self, leading to the unexpected and shocking reality of their relationship.

A psychiatrist probes deep into the erotic traumas experienced by a young woman who has turned to lesbianism.