The ruthless Gestapo officer - in hiding and on the run

Set in Occupied Belgium, The Secret Army followed the activities of Lifeline, a secret organisation set up to help Allied airmen and agents escape back to Britain across German lines. Its most deadly enemy was StandartenfÜhrer Ludwig Kessler (Cliffford Rose), fanatical head of the Gestapo. The Secret Army ended with Kessler making good his escape rather than face retribution for his war crimes.
This series picks up Kessler's story 3 years later. A Belgian TV investigative journalist, van Eyck (Jerome Willis), interviews a prosperous German industrialist calling himself Manfred Dorf, confronting him on camera with his true identity, Ludwig Kessler, which he denies. But he is living on borrowed time. Sooner or later someone will recognise him.
To confirm his theory van Eyck invites members of Life line to the studio: Albert (Bernard Hepton), Monique (Angela Richards) and Natalie (Juliet Hammond-Hill) .