The Sinner backdrop

The Sinner S4E4 — Part IV

7.4

The Sinner•Season 4•Episode 4

Part IV

7.4/10 · 1,248 votesNov 3, 202146 min

Ranked #7 of 8 in Season 4•−0.1 vs season avg

When the Muldoons push to close the investigation, Ambrose refuses, pushing Sonya to the brink.

Directed byRadium Cheung

Written byPiero S. Iberti

Previous episodeE3 · Part III Next episodeE5 · Part V

Seasons4

Season 4 Episodes8

Part I still

Part I

Part II still

Part II

Part III still

Part III

Part IV still

E4 7.4Now viewing

Part IV

Part V still

Part V

Part VI still

Part VI

Part VII still

Part VII

Part VIII still

Part VIII

Cast8

Bill Pullman

Bill Pullman

Harry Ambrose

Frances Fisher

Frances Fisher

Meg Muldoon

Alice Kremelberg

Alice Kremelberg

Percy Muldoon

Neal Huff

Neal Huff

Sean Muldoon

Cindy Cheung

Cindy Cheung

Stephanie Lam

Ronin Wong

Ronin Wong

Mike Lam

Jessica Hecht

Jessica Hecht

Sonya Barzel

Michael Mosley

Michael Mosley

Colin Muldoon

Crew7

Radium Cheung

Radium Cheung

Director of Photography

Radium Cheung

Radium Cheung

Director

P

Piero S. Iberti

Writer

J

Josh Ries

Assistant Editor

K

Karin Behrenz

Second Assistant Director

M

Michael Shandley

First Assistant Director

D

Deborah Moran

Editor

Discussion

0 comments

Join the conversation

Share your take and reply to other fans.

No comments yet

Be the first to share your thoughts on this episode.

Episode Summary

"Part IV" is episode 4 of The Sinner season 4. It scored 7.4/10 from 1,248 votes, ranking #7 of 8 episodes this season (season average 7.5). Directed by Radium Cheung and written by Piero S. Iberti, it aired on November 3, 2021.

Next: E5 · Part V Best of Season 4