Diane Selwyn shoots herself at the end of the film because she is utterly consumed by the twin horrors of grief over Camilla's murder and the terrifying realization of her own monstrous guilt. Once Diane wakes up from her protective dream, she is forced to live in the grim reality of what she has done. She hired a hitman to execute Camilla, the woman she passionately loved, out of pure professional jealousy and romantic rejection. The blue key on her coffee table is a constant, physical reminder of that irreversible choice. As she sits in her filthy apartment, her mind disintegrates. She is haunted by hallucinations of her past—specifically the elderly couple who accompanied her to Los Angeles when she was full of hope. In her psychotic break, these figures shrink and crawl under her door, morphing into screaming, grotesque tormentors that chase her into her bedroom. This hallucinatory sequence represents her internalized shame and the death of her innocent dreams. Unable to escape the monstrous reality of her actions and the literal ghosts of her conscience, she grabs the gun from her nightstand and pulls the trigger.■