Off-duty police officer Laurie Franklin finds herself caught up in a strange sequence of events after a person falls in front of her train.
When she learns that a newborn baby has been abandoned at the local hospital Laurie becomes convinced that the two events must be connected, but both the train's victim and the baby remain unidentified.
As she is drawn deeper into the mystery, Laurie realises this might not be a simple case of suicide at all, but something much darker.
|PC Laurie Franklin||Suranne Jones|
|DI Mal Craig||David Morrissey|
|Jen Mason||Anne Reid|
|Gerard Hopkirk||Bernard Hill|
|Ross Dwyer||Bradley Johnson|
|Didi Mputu||Cornell S John|
|Mohammed Hassan||Ash Tandon|
|Rowan Porter||Katie Griffiths|
|Jamal Matthews||Ashley Walters|
|Danny Preston||Matthew McNulty|
|Pat Dowling||Steve Evets|
|Farid Sardar||Kamal Kaan|
|Colly Trent||Nina Sosanya|
|Dr Adel Haydar||Philip Arditti|
|Sister Siobhan Doole||Kerry Condon|
|PC Natalie Cryer||Samantha Robinson|
|Sgt Don Parker||Shaun Dooley|
|Maureen Hardy||Pooky Quesnel|
|Ibra Akram||Aaron Neil|
|Clinic Nurse||Wendy Patterson|
|Nurat Preston||Shivani Ghai|