February, 1944. A bitter winter grips occupied France, where Marc Reece leads an SOE circuit facing deadly risks, operating in secret to sabotage the German war effort. But Marc has a second mission, secret from even his fellow agents – including Charlotte, the woman with whom he has ill-advisedly fallen in love. Everyone knows that D-Day is coming, and that the hours following the Allied landings will decide the war – and every last scrap of information he can provide might make all the difference to the fate of the Western world. But when the circuit is ambushed – with deadly consequences – Marc realises there may be a spy in their ranks, putting at risk everything they’ve been fighting for. Then Charlotte goes missing.