Written by Francis Durbridge and Clive Exton.
[Starring] Jack Hedley as Tim Frazer
Starring Ralph Michael with Gerald Cross, Heather Chasen, Barbara Couper, Redmond Phillips
Tim Frazer has been engaged by a special Government department to find Harry Denston, Frazer's ex-business partner. Harry's car is in Frazer's possession; a man named Tupper wishes to buy the car and Frazer arranges to sell it to him. In the meantime, on arriving home, Frazer finds a colleague, Crombie, stabbed to death - and on his mantelshelf a newly placed but not unfamiliar object - a model sailing vessel.