An adventure serial in six episodes by Donald Wilson.
Starring William Franklyn, Lana Morris, Rona Anderson, Moray Watson, Ewan Roberts

General Campbell has unaccountably disappeared, just before his memoirs were due to be published. When Roger Kenyon, a scientist called in to vet an important chapter of the memoirs, tried to see the General's secretary, Isobel Gilmour, he found that she had left London in a hurry.
Meanwhile the Reverend Murdo Aitcheson arrived unexpectedly on the scene, to warn Alison Campbell that her father was in Scotland on very personal business, and that Isobel was on her way to join him.

(First shown on October 3, 1960)