The Shadow ending that I'm most used to is, "The weed of crime bears bitter fruit. Crime does not pay! The Shadow knows!"
Here are the words to this unique ending from "Murder in E Flat.": "Let no man tempt you into crime. For crime is like a strangling serpent, it crushes him who feeds it most. Beware lest the serpent of crime ensnare you in his folds. Remember, crime does not pay! The Shadow knows!" Of course, there is The Shadow's sinister laugh before and after the quoted words above. I like the ending
I like that ending and I'm sure there are others that are different as well. The ending to the program was just one more way they tried to impress on the listening audience that crime doesn't pay!