Set along the South Coast of England in the 1940s, Foyle 's War stars Michael Kitchen as Detective Chief Superintendent Christopher Foyle, the straightforward sleuth who fights his own battles on the home front while war rages across Europe.Seasons IV and V find Foyle and his team tackling a brutal death on an American Army base, uncovering secret government research after a biological warfare experiment goes awry, investigating the murder of Sgt. Milner's estranged wife, and probing the clandestine world of weapons development