A period piece with kids sent away from the cities during “The Blitz,” this adventure features a soldier hiding from the authorities and a couple of familiar faces — Jenny Agutter and Tom Courtenay.

Agutter’s presence in this speaks to its origins. Long before she was in “An American Werewolf in London,” she starred in the family film that “inspired” this one, 1970’s “Railway Children.” The working title of this one was “The Railway Children Return.”

Sept. 23.