Rebecca Mathis is a sex therapist. One of her patients is found dead. At first it is presumed he died of a heart attack... Rebecca Mathis is a sex therapist. One of her patients is found dead. At first it is presumed he died of a heart attack... Rebecca Mathis is a sex therapist. One of her patients is found dead. At first it is presumed he died of a heart attack... Rebecca Mathis is a sex therapist. One of her patients is found dead. At first it is presumed he died of a heart attack...