Sylvia Ann Torgerson was 3 years old when she was murdered on June 30, 1973. The killing took place in Rochester, Minnesota, as part of a multiple-victim incident in which several members of the Torgerson family and a live-in babysitter were found dead. The method of killing reported for Sylvia was strangulation.

Her father, David James Torgerson, born in Austin, Minnesota in 1943, had a long history of mental illness and violent behavior and had spent time in psychiatric institutions, including Rochester State Hospital. After being released into a work release program, he killed his wife Lana Alice Torgerson, the children Sylvia Ann and John David, and their babysitter Rebecca Rathbun. He was apprehended and returned to prison, where he later confessed to other murders from 1969 and claimed responsibility for additional attacks. David Torgerson died by suicide in his prison cell on November 6, 1973, before any trial.

Anyone who knew Sylvia, the family, or has information about the case is asked to come forward.