Scotland Yard investigate suspects who might be sending threatening letters...

Starring Patrick Allen and Sarah Lawson.

John Creasey's detective thriller.

Dramatised by Maurice Travers.

Chief Inspector Roger West .... Patrick Allen
Janet .... Sarah Lawson
Detective Inspector Bill Sloan .... Derek Newark
Mark Lessing .... James Kerry
Eve Wedlake .... Anna Gilcrist

Producer: John Browell

First broadcast on Radio 2 in May 1969. Show less