Peter Scanavino born February 29 1980 is an American actor Since 2005 Scanavino has had dozens of minor roles in films and on television most notably Deception 2008 The Good Wife and The Blacklist In 2005 Scanavino gueststarred on the NBC crimedrama series Law Order Criminal Intent in the fifthseason episode Diamond Dogs as petty criminal Johnny Feist He was also a guest on Law Order as a suspect who was a graphic designer in the 2009 episode Just A Girl in the World In 2013 Scanavino gueststarred on the longrunning NBC crimedrama series Law Order Special Victims Unit in Season 14 Episode 13 Monsters Legacy as Johnny Dubcek The same year he starred in the independent romanticcomedy film Mutual Friends directed by Matthew Watts In 2014 Scanavino joined SVU in its sixteenth season this time as Dominick Carisi Jr nicknamed Sonny a new SVU detective Initially in a recurring capacity Scanavino was promoted to the main cast in the fifth episode of the same season According to SVU Executive Producer Warren Leight Carisi comes in and shakes things up and is a guy who maybe needs a little bit of refining Scanavino noted that Carisi is a total outsider Hes brusque and he doesnt really get the nuances and hes not very experienced so he puts his foot in his mouth a lot of times But hes learning Hes picking it up I think hes a good detective but hes got a lot to learn on how to approach cases Scanavino starred in an episode of Netflixs 2020 anthology series Social Distance as the father of his reallife son Leo BaiScanavino