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Chicago Med S4E5 — What You Don't Know
7.8
Chicago Med•Season 4•Episode 5

What You Don't Know

7.8/10 · 392 votesOct 24, 201842 min

Ranked #12 of 22 in Season 4•matches the season avg

Discussion

When things become complicated, Will is forced to lie to Natalie. Ethan and April find out some compromising information about Emily's boyfriend and Ava is unsure of what to do with a patient who is refusing treatment.

Directed byDonald Petrie
Written byStephen Hootstein
Previous episodeE4 · Backed Against the WallNext episodeE6 · Lesser of Two Evils
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Season 4 Episodes22

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Cast9

Nick Gehlfuss

Nick Gehlfuss

Dr. Will Halstead

Marlyne Barrett

Marlyne Barrett

Maggie Lockwood

Yaya DaCosta

Yaya DaCosta

April Sexton

S. Epatha Merkerson

S. Epatha Merkerson

Sharon Goodwin

Torrey DeVitto

Torrey DeVitto

Dr. Natalie Manning

Oliver Platt

Oliver Platt

Dr. Daniel Charles

Colin Donnell

Colin Donnell

Dr. Connor Rhodes

Brian Tee

Brian Tee

Dr. Ethan Choi

Norma Kuhling

Norma Kuhling

Dr. Ava Bekker

Crew2

Donald Petrie

Donald Petrie

Director

S

Stephen Hootstein

Writer

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Episode Summary

"What You Don't Know" is episode 5 of Chicago Med season 4. It scored 7.8/10 from 392 votes, ranking #12 of 22 episodes this season (season average 7.8). Directed by Donald Petrie and written by Stephen Hootstein, it aired on October 24, 2018.

Next: E6 · Lesser of Two EvilsBest of Season 4