As I've pointed out, it's hard to be devious enough in this thread. Take a look at the first post. "The Wizard of Oz" is hardly about a killing spree, but it could be written that way. NIS, I appreciate your taking a stab at this, especially since I've passed; but changing "gym" to "business" just isn't devious!
"Dodgeball."
Try this:
A man saves another man's life but later refuses to save the same man's life.
(Still might be too obvious.)
George