Geraldine Cornwell Martin was 28 when she disappeared from Tulsa, Oklahoma on the evening of February 5, 1975. She had been an art student at Tulsa Junior College and was last seen leaving class to meet a friend for dinner. Her Volkswagen was found near the college, and her purse with keys and glasses was later discovered by the Broken Arrow Expressway. A man tried to use her blood-stained credit card, confirming foul play.

Nineteen days after she vanished, construction workers renovating a vacant apartment building on North Osage Drive found her nude body hidden in a second-floor closet. Her clothes from the night she disappeared were nearby. The autopsy showed she had been raped and strangled with a cord that compressed her neck severely, had blunt force trauma to her face, and was mutilated after death, prompting investigators to consider a possible serial offender.

In 2002 DNA evidence led to the arrest of long-haul truck driver Clyde Carl Wilkerson in Little Rock, Arkansas; in 2004 he pleaded guilty to abduction and murder and received life in prison. Police suspected he might be linked to other unsolved killings. If anyone knew Geraldine, her movements that February, or saw suspicious activity near Tulsa Junior College or North Osage Drive in 1975, please share what you remember.