Gaisior was abducted from Harrisburg, Pennsylvania on December 3, 1980. Robert Andre Ruff and Frank Johnson were found guilty of the crime in 1982. The following year, both men were charged with Gaisior's murder and Johnson pleaded guilty.

Johnson stated that after Gaisior's kidnapping, he and Ruff took her to the bank and forced her to withdraw money from her account, then drove her to a Washington, D. C. area hotel, and raped her there. Afterwards, he said, Ruff shot Gaisior with Johnson's gun and threw her body in the Anacostia River. Ruff was convicted largely on the basis of Johnson's testimony.

Gaisior graduated from Mount Union High School and attended Madison University in Virginia. She enjoys sewing. She has previously been employed as a secretary for a lawyer, and at the time of her kidnapping was employed as a service representative for the Bell telephone company. Her remains have never been located. Washington, D. C. police are investigating.