Dragnet presented a Christmas tale in 1954 that was later remade for the 1967-70 version.
The keynote to this tale is the theft of a Nativity scene from a Los Angeles parish, and it's up to Joe Friday (Jack Webb) & Frank Smith (Ben Alexander) to locate the missing Nativity. I remember seeing the remake many times, and the surprise reveal is worth the price of admission alone.
Uploaded by Pizzaflix. George Fenneman (You Bet Your Life) is the announcer.