Murder of Tammy Homolka

In 2006, the American film Karla premiered. It was told from Karla Homolka's point of view. In the film, Tammy Homolka's death is featured in one of the scenes. Laura Prepon portrayed Karla, Misha Collins portrayed Paul Bernardo, and Cherilyn Hayres portrayed Tammy Homolka.

In 2001, the magazine Elm Street published an article in which it implied that forensic evidence proved that Tammy's death was not an accident and that her sister had deliberately administered an overdose of Halothane. The magazine described Karla as a "malignant narcissist" who was so incensed by her fiancé's attraction to her sister that she took steps to remove Tammy from his affections permanently.

On February 26, 1993, the defence lawyer and the Crown began negotiations on a 10-year sentence for Karla in exchange for her testimony and full disclosure of all crimes. At the time of the negotiations, the role she and Bernardo had played in Tammy's death was not known. When she was admitted for psychiatric assessment in March 1993, Karla confessed in a letter to her parents about her involvement in Tammy's death. When the plea agreement was finalized, the initial 10-year sentence was still intact, with two years added for Tammy's death. Karla was officially sentenced to 12 years on July 6, 1993.

On July 20, 1993, Tammy's body was exhumed. Inside her casket was a wedding invitation for Karla and Bernardo's wedding, as well as some notes. Other members of the Homolka family asked that the items be removed before Tammy's re-interment.

In September 1990, Karla agreed to allow Paul to have sex with Tammy. She obtained a bottle of Halothane (a liquid general anesthetic) from the veterinary clinic where she worked, which would later be used to sedate Tammy while the two raped her. On December 24, 1990, Tammy was drugged with a combination of Halcion and alcohol, passing out in the family room in the basement of the Homolka house. Tammy's parents and sister Lori were upstairs asleep at the time.

Tammy Lyn Homolka (January 1, 1975 – December 24, 1990) was a Canadian murder victim who was killed by her older sister Karla Homolka and Karla's partner Paul Bernardo. On December 24 1990, a week and one day before Tammy's 16th birthday, Karla and Bernardo plied Tammy with alcoholic drinks laced with the sedative Halcion. When she became unconscious, the two raped her. Tammy became sick while sedated and died. After failed attempts to revive her, Karla covered up evidence of the assault and called an ambulance. Her official cause of death was listed as choking to death on her own vomit, and was believed at the time to have been an accident. After the killers were arrested for the murders of Leslie Mahaffy and Kristen French, Tammy Homolka's body was exhumed. She is interred at Victoria Lawn Cemetery in St. Catharines, Ontario.