Foyle's War returns after a 3 year hiatus on PBS's Masterpiece Mystery. Sunday, Sept. 15 9-10:30 . There will be 3 new episodes airing Sundays through 9/29.

Foyle (played by Michael Kitchen) has been recruited by MI5 to track down Soviet spies who may have infiltrated British atomic research. The setting has changed, he's no longer in Hastings but Honeysuckle Weeks (I'm not making this up) is back as Sam.

Here is a link that might be useful: NY Times