The incredible story of how a man infiltrated France's largest terrorist group.

In the late 1970s, Gabriel Chahine, a Lebanese-born artist in search of recognition, offered his talents to the French intelligence service to trap his comrades in the communist terrorist group, Action Directe. Thanks to the theft of a painting by Hieronymus Bosch, The Conjurer, he infiltrates the group and sets a trap from which no one, not even himself, will escape unscathed…