Theresa Kelly
played by Jessica McNamee
  • Character bio
  • Actor bio

Tough, sexy and smart, Theresa (Jessica McNamee) followed in her daddy’s footsteps to become a kick-ass cop with the Chicago P.D.  But while she has big ambitions beyond local law enforcement, T is kind of liking things the way they are right now, even if that mostly involves patrolling the streets of Chicago with her stupidly sweet partner, Billy, and dealing with her competitive sister Maeve’s petty B.S. 

Recently, Theresa finally made good on her threat to break up with Johnny due to his serious co-habitation phobia, but after dipping her toe back into the dating pool, she found herself drawn back to the dumb sonofabitch.  And even though fate (and their families) conspired to screw up their quickie wedding, things are hotter then ever between Theresa and her guy.

Jessica McNamee stars as the tough, but sexy, Chicago police officer Theresa Kelly on USA Network’s hit comedy series SIRENS. 

Most recently, McNamee was seen opposite Rachel McAdams and Channing Tatum in Michael Sucsy’s The Vow. She made her feature film debut in Sean Byrne’s The Loved Ones alongside Xavier Samuel. The Loved Ones premiered at the 2009 Toronto Film Festival and received the Midnight Madness Cadillac People’s Choice Award.  The film also screened as part of the Freak Me Out Pathway at the Sydney Film Festival. 

She is well-known for her role as Sammy Rafter on Australian Network Seven’s award-winning and top-rated family drama, “Packed to the Rafters.” She has also appeared in the Australian hits “Home and Away” and pilots including “Hammer Bay,” “Secretary” and “In Search of Paradise.” 

McNamee has also starred in the short films 50/50 directed by Megan Riakos and Yen Yang’s Secrets of Seduction.