A woman who goes on maternity leave becomes increasingly paranoid about the motives of the person covering for her.
Morven Christie
Vicky McClure
Richard Rankin
Neve McIntosh
Navin Chowdhry
Kim Allan
Gilly Gilchrist
Siobhan Redmond
Sarah MacRae
Caoimhe Clough
Euan Macnaughton
Lexie McLean
Dougray Scott