Stephen L Sullivan, or "Sully", is an actor based in Los Angeles, CA. He will be seen in the upcoming season 2 of "Criminal Minds:Beyond Borders". Recently, he was found portraying the iconic "John Lennon" in the HBO's series, "Vinyl", in episode 8, "E.A.B.". Stephen is well known for his role as "Clay" in AMC's "Mad Men" for his encounter with Roger Sterling at the hippie commune in the episode entitled, "The Monolith". He was seen also as "Dennis Wilson", on Lifetime's, "Manson's Lost Girls". He has been found on the short end of a rope as cattle wrangler, "Cooper James" in "Longmire". As the fratricidal "Liam Finnegan" of the Channel Street Boys in "Rizzoli & Isles". And as the itchy trigger fingered "Sean Rourke" in the short lived series, "Ironside". He was also seen as "Serge" on the long running "General Hospital".