A serial in six parts.
When Flora Keiry is murdered, Professor Lark and John Cornelius reveal to her father, the MP Ian Sanderson, that he himself is a mutant being manipulated by some unidentified Controller. Shocked and horrified, Sanderson helps them trace the organisation back to a merchant bank in the City. As they await their interview with the Chairman, Sir Graham McLudden, who should they see leaving the bank but the Reverend Donal Scoular, minister on the Isle of Lewigh.
Script by Rene Basilico from an idea by Robert Holmes.

(Rptd: Wed 11.30 am)