WHEN WATSON IS IMPLICATED IN A DEA INVESTIGATION OF ILLEGAL PRESCRIPTIONS, SHE AND HOLMES SEARCH FOR THE PERSON USING HER MEDICAL LICENSE TO SELL DRUGS, ON "ELEMENTARY," SUNDAY, DEC. 18

"Pick Your Poison" - When Watson is implicated in a DEA investigation into doctors writing illegal prescriptions, she and Holmes search for the person using her medical license to sell drugs, on ELEMENTARY, Sunday, Dec. 18 (10:30-11:30 PM, ET/10:00-11:00 PM, 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:

Chris McKinney (Detective Guzman)
Emily Dorsch (Dr. Franny Krieg)
Jake Brinskele (Ethan Moore)
William Ragsdale (Patrick Moore)
Darlesia Cearcy (Pharmacist)
Charlie Pollock (Lee Fisk)
Stephanie Jean Lane (Katie)
Wendell B. Franklin (DEA Agent Ritter)
Jeremy Burnett (Duane)

WRITTEN BY: Bob Goodman

DIRECTED BY: Jeremy Webb