The apparently accidental death of a young woman in a munitions factory becomes linked with the murder of Milner's estranged wife as he falls under suspicion.

Foyle has his hands full dealing with illegal gambling, sabotage, and his needy goddaughter who shows up on his doorstep with her traumatized son.

April 1944. Milner is unhappy with his new DCS and has asked for a transfer, but after he is murdered, Foyle comes out of retirement to replace him.

October 1944. Foyle hones in on two murders: an unpopular psychiatrist in a trauma facility and a low security German POW on work release to a local farm.

May 1945. Foyle joins a municipal committee that's preparing for the now imminent V-E Day celebration but soon finds himself investigating the deaths of two of its members.