I rather enjoyed the 1963 movie The List of Adrian Messenger, in which the titular list is not a kill list at all: in fact, they are people who Messenger suspects have been murdered. We do see the (heavily disguised) killer cross a name off a list at the very start of the film, with Messenger's name right above it.
Speaking of heavily disguised people: four handsome leading men of the era also make cameo appearances. Identify ANY ONE OF THE FOUR, seen here before removing their makeup in the closing scenes of the movie.
(The letters are there because I was going to ask for any of the actors' names and the letter of their character, but honestly coming up with the name seems like enough. Feel free to show off by including the letter corresponding to your answer; it won't count against you if you're wrong.)
A: TONY CURTIS; B: BURT LANCASTER; C: FRANK SINATRA; D: ROBERT MITCHUM