SHERLOCK, JOAN AND KITTY TRY TO PROVE THAT A STRING OF MURDERS IS CONNECTED TO AN INTERNATIONAL GOVERNMENT CONSPIRACY, ON THE CONCLUSION OF A TWO-PART "ELEMENTARY," SUNDAY, MARCH 12

Ophelia Lovibond Guest Stars as Kitty Winter, Sherlock's Former Protégé

"Fidelity" - Joan and Kitty try to prove that a string of murders, stemming from an old case Sherlock and Kitty solved in London, is connected to an international government conspiracy with the Defense Intelligence Agency at its center. Also, Sherlock and Kitty's relationship is strained after she shares life-changing news, on the conclusion of a two-part ELEMENTARY, Sunday, March 12 (10:00-11:00 PM, ET/PT) on the CBS Television Network.

REGULAR CAST:

Jonny Lee Miller (Sherlock Holmes)
Lucy Liu (Joan Watson)
Aidan Quinn (Captain Tommy Gregson)
Jon Michael Hill (Detective Marcus Bell)
Nelsan Ellis (Shinwell Johnson)

GUEST CAST:

Ophelia Lovibond (Kitty Winter)
Tim Guinee (NSA Agent McNally)
Alan Rosenberg (Sydney Garber)
Blaire Brown (Kate Durning)
Marianne Muellerleile (Margaret)
Scott Shepherd (Anson Gephardt)
Rachel Christopher (Receptionist)
Marlie Hall (Cable News Anchor)
Connor Bond (FBI Agent #1)
Steve Key (FBI Agent #2)
Jim Piddock (Tom Saunders, V.O.)

WRITTEN BY: Jason Tracey & Robert Doherty

DIRECTED BY: Christine Moore