Gareth Rubin’s thriller The Winter Agent is set in occupied Paris in 1944. Special Operations Executive agent Marc Reece is on a mission to survey possible beaches for an allied landing, reporting directly to Churchill. But back in Paris his circuit of agents is ambushed by the Germans; there is a traitor in his network. Marc’s lover, the radio operator Charlotte, goes missing and, despite himself, Marc begins to suspect that she might be the spy... There is little dimension to Rubin’s characters, but The Winter Agent is very readable; the plot races along, with plenty of surprises and red herrings.