Dylan’s loyalty to Med and the police department is challenged when an old family friend and veteran cop exhibits concerning behavior.

The annual random drug testing puts a doctor’s career in jeopardy.

Ethan tries a risky old-school method on a patient.

Will helps Stevie search for her mother.

Air Date: Wednesday, Nov. 10 (08:00PM – 09:00PM) on NBC.

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CHICAGO MED -- "Just as A Snake Sheds Its Skin" Episode 708 -- Pictured: (l-r) S. Epatha Merkerson as Sharon Goodwin, Brian Tee as Ethan Choi -- (Photo by: George Burns Jr/NBC)