After Karim Bey has been killed aboard the Orient Express, the train passes one of his sons. Right after this (about 1:16 into the movie), you can see an older gentleman facing away from the train wearing a while shirt, grey pants, and carrying a cane....
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Krilenko tries to escape through a secret window in a billboard advertising Call Me Bwana (1963), also produced by Broccoli and Harry Saltzman.
O.K., play the movie to where Kerim Bey kills Krilencu. The hideout he uses is a movie poster. On it is a movie where Albert R. Broccoli and Harry Saltzman present "Call Me Bwana". It just so happens that these two men produced From Russia With Love!...
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