Patriots Day

Mark Wahlberg

Tommy Saunders

Michelle Monaghan

Carol Saunders

J.K. Simmons

Sergeant Jeffrey Pugliese

Dicky Eklund Jr.

Young Police Officer

Michael Marchand

Young Police Officer

Rhet Kidd

Harrold

John Goodman

Commissioner Ed Davis

Frank Czarnowski

Officer Outside Harrold’s Apartment

Chris O'Shea

Patrick Downes

Rachel Brosnahan

Jessica Kensky

Jake Picking

Officer Sean Collier

Lana Condor

Li

Jerry Dwyer Jr.

MIT Grad Student

Patrick Wensing

MIT Grad Student

Michael Chuah

MIT Grad Student

Sang-bae Kim

MIT Professor

Jimmy O. Yang

Dun Meng

Ping Ping Yang

Meng's Mom