For the third time, HBO cameras go inside Trenton State Maximum Security Prison--and inside the mind of one of the most prolific killers in U.S. history--in this gripping documentary. Mafia hit man Richard Kuklinski freely admits to killing more than … Richard Kuklinski, Park Dietz Added on HBO 2022-06-06.

Richard Kuklinski was a devoted husband, a loving father...and a ruthless killer. A decade after HBO last visited him in prison, the convicted murderer, who freely admits having whacked more than 100 people in cold blood, takes viewers back inside … Richard Kuklinski, Mark Musto, Rocco Fazzolari, Rich Lounello Added on HBO 2022-06-06.

The true story of Richard Kuklinski, the notorious contract killer and family man. Michael Shannon, Winona Ryder, Ray Liotta, Chris Evans, David Schwimmer, James Franco, Stephen Dorff Added on Paramount 2023-05-18. Youtube Trailer