Locked In

Famke Janssen

Katherine Carter

Rose Williams

Lina Carter

Alex Hassell

Dr. Robert Lawrence

Finn Cole

Jamie Carter

Anna Friel

Nurse Nicky Mackenzie

Georgia Thorne

Young Lina

Toby Ryan

Young Jamie

Karl Collins

Neurosurgeon

Lesley Molony

Doctor

Chris Hallaways

First Arborist

Rachel Holifield

Second Arborist

Cameron Robertson

Landlord

Hope Delaney

Katherine's TV Daughter