Sean finds out that Colleen is not really a talent agent at all but instead an obsessed fan that just sells teddy bears she makes. She then becomes obsessed with Sean and wants nobody to come in the way of their unreal friendship. After a taping of 'Hearts and Scalpels' Sean meets an agent that would like to have Sean as a client. Later on he gets seduced by Olivia's daughter Eden but Sean nearly has a heart attack having sex with her while on ecstasy them exploiting his relationship. He meets Kate, a woman who stars on the show with Sean and they date for awhile until she mentions her fantasy would be having sex with an African American. Sean brought in a lot more customers because of the move to the show. Christian quit the show, leaving Sean with most of the attention and leaving Christian angry and saying the show is good for his ego. Sean and Christian were offered medical consultants for the show 'Hearts and Scalpels' they also become actors on the show. The move to LA did not bring McNamara/Troy very much business since it was LA. After Julia leaves him, Sean re-evaluates his life and sells his portion of the practice to Christian and Michelle Landau. Fathers a third child, Connor, with Julia after their reconciliation.

Runs the McNamara/Troy plastic surgery practice with his best friend, Christian Troy, who has been revealed to be the biological father of Sean's son Matt. Sean and Julia, who reconciled after a brief separation, have three children-Matt, Annie, and Connor, including one who's physically handicapped. A plastic surgeon nearing middle age and trying to come to terms with his formerly 'perfect' life falling apart.

Cast of nip tuck season 3