CSI: Crime Scene Investigation Episode 10.10 Better Off Dead

In a twisted tale of attempted suicide, the CSIs dig to find the truth about a young woman, found dead, wrapped in a quilt on the side of the road. A shootout in a gun store leaves a chaotic mess which later ties into the death of the young woman. The team searches the victim's apartment and finds that she is having a romantic relationship with "the man in the red shirt." They cannot track down the whereabouts of this mysterious man but fear he is the person who killed the victim. What they do discover in her apartment is her dead dog; he had been poisoned. "The man in the red shirt" turns out to have been the victim's boyfriend, both suffering from bi-polar disorder, and had a secret suicide pact. In a twisted act of love, he poisoned himself at her apartment and left the poison for her, but her dog ended up ingesting the poison before she arrived home. When she found them both lifeless in the apartment, she assumed they were dead. Her boyfriend was really only unconscious, and when he awoke, he found her dead from a self-inflicted gunshot wound.