83 minutes
9/1/1988
Thirteen-year-old Nick and his slightly dense older brother Herbert run the Diamond Private Detective Agency above Camden Town Tube Station in north-central London. When a master criminal called The Falcon dies, they come into possession of his box of chocolate Maltesers, which contains the secret key to a fabulous cache of diamonds. Can they unravel the mystery and avoid the clutches of seedy lowlifes Brenda Von Falkenberg, Gott and Himmell, The Fat Man and the dogmatic Chief Inspector Snape, all of whom want to find the swag first.
Colin Dale
as Nick Diamond
Dursley McLinden
as Tim Diamond
Susannah York
as Lauren Bacardi
Saeed Jaffrey
as Mr. Patel
Patricia Hodge
as Betty Charlady/Brenda von Falkenberg
Roy Kinnear
as Jack Splendide
Jimmy Nail
as Boyle
Bill Paterson
as Chief Inspector Snape
Michael Robbins
as The Fat Man
Peter Eyre
as Gott
Nickolas Grace
as Himmell
Michael Medwin
as The Professor
Forbes Collins
as Henry von Falkenberg
José René Ruiz
as Johnny Naples (as Rene Ruiz)
Donald Standen
as Lawrence
Jim McManus
as Hammett
Robert Bathurst
as Vicar
Jonathan Linsley
as Bouncer
R.J. Bell
as Club Owner
Jenny Tomasin
as Traffic Warden
Joanna Dickens
as Large Woman
Alison Ruffelle
as Sales Girl
Auriol Goldingham
as Sales Girl
Cristina Avery
as Perturbed Mother
Charles Simon
as Grandfather
Geraldine Muir
as Granddaughter
Gerald Campion
as Uncle Holly
Ricky Diamond
as Harpoon Salesman
Mammoth
as Fat Man's Henchman
John McCoy
as Fatman's Henchman
Malcolm Baker
as Fatman's Henchman
Nicky Moore
as Fatman's Henchman
Vinnie Reed
as Fatman's Hnechman
Mark White
as Dog Walker