Emily Blunt as Evelyn Abbott

John Krasinski as Lee Abbott

Millicent Simmonds as Regan Abbott

Noah Jupe as Marcus Abbott

Cillian Murphy as Emmett

Djimon Hounsou as Man on Island

Okieriete Onaodowan as Police Officer

Scoot McNairy as Marina Man

Zachary Golinger as Emmett's Son

Blake DeLong as Umpire

Stefania Warwick as Woman at Game

Alycia Ripley as Server

Cristalis Bonilla as Teen in Bar

Domonic Taggart as Teen in Bar

Silas Pereira-Olson as Boy on Island

Alice Sophie Malyukova as Girl at Marina

Ashley Dyke as Woman on Island

Dean Woodward as Beau Abbott

Barbara Singer as Woman in Store

David Lundy as Marina Person

Michaela Pace as Oliver's Mom

Wayne Duvall as Roger (uncredited)

Lauren-Ashley Cristiano as Emmett's Wife (uncredited)

Logan V Davoli as Emmett's Older Son (uncredited)

Robert A. Coldicott as Townsperson (uncredited)

Sheri Fairchild as Woman at Hair Salon (uncredited)

Kyle Licht as Townsperson with Car (uncredited)

Scott Matheny as Townsperson (uncredited)

Gary Sundown as Island Person (uncredited)

Bill Smith as Townsperson (uncredited)