The third season comes again with new surprises as the driver of Felicia sees a man get rid of a body, but police say the dead man, Archie Waterson, has acted strangely as he drowned himself and warned him not to confess. Archie seems to have worked as a master of art for the decentralized master, but when Father Brown and Lady Felicia visit, it is clear that the supposed restoration is the interface to MI5.
