More commonly known in America as Stairway to Heaven, but (not to be confused|nothing to do) with that Led Zep song. We'll go with the original British title here. This movie was made shortly after World War 2, and it's pretty bizarre for the era. Or, in fact, for any era.
David Niven plays Peter Carter, an RAF pilot trying to get his doomed bomber back to Old Blighty with one engine on fire and the surviving crew punched out over the channel. He gets on the radio with June (Kim Hunter), and there's something about his classically British stiff upper lip and her warm American voice that makes them fall in love. On the radio.
After saying ta-ta to June, Peter jumps from the plane before it crashes and—against all odds—survives, getting washed up on the beach. He finds June, they get married, live happily ever after.
Just kidding! It turns out that Peter was supposed to die and his survival was due to an extremely rare slipup by the heavenly powers-that-be. Up in the realm of the angels there's much consternation about what to do; the books are out of balance. Peter's summoned to make things right, but he declines; with June he has too much to live for. The resulting conflict brings him to trial. Raymond Massey plays the prosecuting lawyer! (Chosen because of his presumed anti-Brit sentiment: he fell victim to a Redcoat in 1775 Boston.)
There are a lot of movies that revolve around the interaction between the here-and-now world and Heaven. Only in this one is there an effeminate fop who was beheaded during the French Reign of Terror. (He's in a pretty good mood about it though.) Only this one has a ping-pong match between June and a doctor, who's trying to diagnose Peter's "hallucinations" about said fop who's trying to get him Upstairs. Only this one has a camera obscura that the doctor owns as a hobby (seen once, not mentioned again). Only in this one does the good doctor die so that the script can place him as Peter's defense attorney in the Great Beyond. As I said: bizarre.
All kidding aside: there is a lot of dull scenery-chewing speechifying during Peter's trial. Could have done without that.