Although it is chock full of recognizable actors, the main star is a relatively unknown Liam James (
AvP: Requiem, Fred Claus) as 14 - year - old introvert Duncan, who we find reluctantly brought by his divorced mother Pam (Collette, Hitchcock) to her heel - ish boyfriend Trent's (Carell, Crazy
Stupid Love) New England summer beach home.