by Gavin Lyall
Adapted for television in three parts by Brian Clemens
Starring Charles Dance as Major Harry Maxim
with Jill Meager as Agnes, Harvey Ashby as George
and guest star Dan O'Herlihy as Professor John Tyler
The Czech defector starts a 'mole' hunt and the KGB are interested in the missing letter.
BBC Scotland
(R)
(Ceefax subtitles)