Transferred to a new penitentiary, the Daltons are put in a cell with Fennimore Buttercup, a counterfeiter who soon begins to regret having such noisy cellmates.
To get rid of the annoying brothers, he sends them on the trail of his - made-up - stash: $100,000 buried at the foot of a boulder in Red Rock Junction.
One prison escape later, pursued by Lucky Luke, they discover to their horror that the spot they seek ...is inside another penitentiary!
- Format: Paperback
- Pages: 48 pages, comic strips
- Publisher: Cinebook Ltd
- Publication Date: 28/04/2016
- Category: Comic strip fiction / graphic novels
- ISBN: 9781849182980