Having met on a train, a smooth-talking psychotic socialite shares his theory on how two complete strangers can get away with murder to an amateur tennis player — a theory he plans to test out.
A struggling actress tries to help a friend prove his innocence when he's accused of murdering the husband of a high-society entertainer.
Penny Addams lives in a constant state of depression stemming from the trauma of her father's death when she was just a young girl. Her brother, Chase, and stepmother, Lee, work to help Penny process her grief through psychotherapy and revisiting their past, but only the revelation of long-buried family secrets -- including her mother's secret lover and the true nature of her father's death -- can bring Penny out of her intense despair.
