1990 murders in North America

Paul Kenneth Bernardo (born August 27, 1964), also known as Paul Jason Teale, is a Canadian serial killer and serial rapist. Bernardo is known for initially committing a series of rapes in Scarborough, Ontario, a suburb of Toronto, between 1987 and 1990. He subsequently committed three murders with his then-wife Karla Homolka; among these victims was her young sister Tammy Homolka. After his capture and conviction, Bernardo was sentenced to life imprisonment and was later declared a dangerous offender unlikely to be released.

Tammy Lyn Homolka (January 1, 1975 – December 24, 1990) was the younger sister and one of the victims of Canadian murderer Karla Homolka and her partner, Paul Bernardo. On 24 December 1990, less than two weeks before Tammy's 16th birthday, Karla Homolka and her fiancé 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 Paul Bernardo and Karla Homolka 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.

The Altona murder occurred in Altona, Manitoba, Canada, on November 17, 1990. Curtis Klassen, aged 15, was murdered by 17-year-old Earl Giesbrecht. Another teen, Tyler Pelke, aged 14, survived great bodily injuries and alerted authorities.