Between 1940 and 1944 forty Belgians were trained in industrial sabotage at Brickendonbury Manor, near Hertford, UK. This book tells the stories of their successes and failures when they were dropped into Belgian. They include: Emile Tromme, Robert Jourdain, Armand Campion, Octave Fabri, Jean Scohier, Jean Cassart, Henri Verhaeghen, André Wendelen, Achille Hottia, Oscar Catherine, Valère Passelecq, Willy Bernaert, Jean Deflem, Léon Kaanen, ? Piquart, Felicien Moreau, Victor Lemmens, Pierre Osterrieth, Pierre Vliex, Frederic Veldekens, Henri Frenay, Jean Woluwe and Jean van Gyseghem, Jean Schools, Leon Engelen, Adhemar Delplace, Francois Mathot, André Berten, Alphonse Mabille, Theo Andries, André Bayet, Pierre Davreux, Léon Joye, Georges André, Maurice Bertrand, Robert Duby, Zephir Braibant, Leon Servais, Raymonde Thonon and André Guissart.