The Twilight Zone- True Story

A young boy buys an old Polaroid camera at a garage sale for a dollar, and his grandma helps him to open it, and lo and behold, inside is a picture of the woman's long dead son.
The family that sold the camera has no known connection to the man; it's all a bizarre mystery.

http://www.kansas.com/2012/05/25/2349030/wichita-boys-garage-sale-buy-holds.html