Publisher's Synopsis
It is March 1943 and the staff at Britain's top secret intelligence headquarters, Bletchley Park, are struggling to break a new German naval code. Tom Jericho (Dougray Scott) is a mathematician newly assigned to the unit, and thanks to his brilliant insights the apparently unbeatable code begins to reveal its secrets. However, Tom has another, more personal, problem to solve - his former lover Claire (Saffron Burrows) has mysteriously disappeared, leaving only a few confused traces in her wake. Joining forces with the missing woman's bespectacled housemate Hester (Kate Winslet), Tom sets out to investigate.
