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Chicago P.D. S13E4 — Root Cause
8.2
Chicago P.D.•Season 13•Episode 4

Root Cause

8.2/10 · 322 votesOct 22, 202542 min

Ranked #9 of 21 in Season 13•+0.1 vs season avg

Discussion

A string of violent robberies across the city digs up one family's secrets. A surprising detail of Voight's past resurfaces.

Directed byVictor Macias
Written byGavin Harris
Previous episodeE3 · CanaryvilleNext episodeE5 · Miami
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Season 13 Episodes21

Consequences stillE1 8.2

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Open Wounds stillE2 7.5

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Canaryville stillE3 7.9

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Root Cause stillE4 8.2Now viewing

Root Cause

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The Lost Years stillE20 8.1

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Born or Made stillE21 7.8

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Cast7

Jason Beghe

Jason Beghe

Hank Voight

Marina Squerciati

Marina Squerciati

Kim Burgess

Patrick John Flueger

Patrick John Flueger

Adam Ruzek

LaRoyce Hawkins

LaRoyce Hawkins

Kevin Atwater

Benjamin Levy Aguilar

Benjamin Levy Aguilar

Officer Dante Torres

Arienne Mandi

Arienne Mandi

Officer Eva Imani

Amy Morton

Amy Morton

Trudy Platt

Crew2

G

Gavin Harris

Writer

V

Victor Macias

Director

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Episode Summary

"Root Cause" is episode 4 of Chicago P.D. season 13. It scored 8.2/10 from 322 votes, ranking #9 of 21 episodes this season (season average 8.1). Directed by Victor Macias and written by Gavin Harris, it aired on October 22, 2025.

Next: E5 · MiamiBest of Season 13