Change of Luck

Lock me up for my good
No Son. Not a chance.
In this fantasy/mystery novella, an elderly father's dilemma begins when he accepts a crinkled $100 bill from a friend. He soon discovers each time he uses it, the bill returns like magic.

Good luck? Spend to your heart's content?

No. Angry merchant responses and calls to the police would expose him as a deceptive person. Hope to explain by saying he has a magic bill? That would convince his son: the old man is losing his mind. Then he'd certainly have his father committed.

To prevent his loss of freedom, the father had to get rid of the $100 bill. But how? It's possible. His friend did it.