Corbitt was 21 when he joined the Willow Springs, Ill., police force in 1965. A self-described “crooked cop,” he went from ignoring the nefarious deeds of “the Outfit” to actively participating in them. Corbitt was the town’s police chief from 1973 to 1981, then worked as an investigator for the Cook County Sheriff’s Department from 1981 to 1987. But he also moonlighted as a bodyguard, courier and driver for Sam “Momo” Giancana, one of the area’s most powerful crime bosses.
When Dianne Masters, a prominent college trustee and the wife of a mob attorney, disappeared in 1982, Corbitt resigned from the police department. Her body was found inside the truck of a Cadillac at the bottom of the Chicago Sanitary and Ship Canal nine months later. Masters’ head was crushed and two .22-caliber bullets were found in her skull. Corbitt and two others, including her husband Alan, were indicted for conspiracy to commit murder in 1988. All three were convicted a year later.
Corbitt was serving a 20-year sentence in the Chicago Metropolitan Correctional Center when he learned that members of the Mob had ordered a hitman to kill him and one of his sons. In response, he became an informant for the F.B.I. Although he faced additional racketeering charges, Corbitt’s information and cooperation earned him a reduced sentence. He was paroled in 1998.
Once he got out of the joint, Corbitt joined forces with true crime writer Sam Giancana, the nephew of Momo Giancana, and penned a bestselling tell-all book. “Double Deal: The Inside Story of Murder, Unbridled Corruption and the Cop Who Was a Mobster,” was released in 2003. His story also served as the basis for the 1992 TV movie “Deadly Matrimony.”
Corbitt died on July 27 of lung cancer. He was 60.