A victim of the Boston Marathon bombing in 2013 helps the police track down the killers while struggling to recover from devastating trauma.
Jake Gyllenhaal
as Jeff Bauman
Tatiana Maslany
as Erin Hurley
Miranda Richardson
as Patty Bauman
Richard Lane Jr.
as Sully
Nate Richman
as Big D
Lenny Clarke
as Uncle Bob
Patty O'Neil
as Aunt Jenn
Clancy Brown
as Jeff Bauman Sr
Kate Fitzgerald
as Aunt Karen
Danny McCarthy
as Kevin Horst
Frankie Shaw
as Gail Hurley
Carlos Sanz
as Carlos Arredondo
