CHICAGO — On a quiet summer night in 1975, one of Chicago’s most infamous mob bosses, Sam “Momo” Giancana, was gunned down in his Oak Park basement. Today, half a century later, his murder remains a chilling unsolved case — a bloody punctuation mark on the city’s long, complicated history with organized crime.
A Late-Night Killing That Shocked the City
It was just after 1 a.m. on June 20, 1975, when police responded to a grisly scene at 1147 S. Wenonah Avenue in Oak Park. Giancana, 67, was found face-up in a pool of blood on his basement kitchen floor with six .22-caliber bullet wounds to his head and neck. Nothing was stolen, and a money clip holding over $1,400 remained untouched in his pocket…