The Secret

Overview

Reeling from the crash, the gang vows to leave Greta and the past well alone, until mysterious red letters and an old notebook pull them right back in.

Guest Stars

Natasha O'Keeffe

Greta

Bronagh Gallagher

Booker

Emmett J. Scanlan

Owen

Emma Canning

Young Greta

Michelle Fairley

Margo

Nikesh Patel

Harry

Leila Farzad

Marnie

Josh Finan

Jason Meadows