Inside Foyle's War features a recap and favorite moments of the first six seasons, the creation of the series, the decision to set it during World War II, the extensive research that goes into each episode, the casting of Michael Kitchen as DCS Foyle, the casting and progression of Sam Stewart played by Honeysuckle Weeks, as well as exciting secrets from Foyle's natural transition to the Cold War and intelligence gathering in the new episodes, along with much more.