A frantic father asks for Detective Superintendent Sue Manson's help in finding his missing daughter.

The only clue they have is a series of jumbled letters on the back of a poster...

Starring Susan Lynch and Philip Glenister.

Bill Murphy's five-part detective thriller about the hunt for a serial killer obsessed with mathematics.

DS Sue Manson .... Susan Lynch
James Ellstrom .... Philip Glenister
Fred Johnston .... Clive Merrison
Inspector Phillips .... David Bannerman
PC Mags Langan .... Alison Pettitt
Lee Horsley .... David Holt
Superintendent Midgeley .... Nigel Anthony

Director Tanya Nash

First broadcast on BBC Radio 4 in August 2002. Show less