He provided details that led to the conviction of Frank Schweihs and most recently in Operation Family Secrets that helped close several chapters of Chicago Mafia activity and history .
Frank Schweihs is the 1995 trial of Kenneth Hansen for the 1955 Peterson - Schuessler triple homicide .
He provided details that led to the conviction of Frank Schweihs , the 1995 trial of Kenneth Hansen for the 1955 Peterson - Schuessler triple homicide , and most recently in Operation Family Secrets that helped close several chapters of Chicago Mafia activity and history .