La increíble historia de... la abuela gánster ataca de nuevo

Ben's grandma was the best: not only was she a great cabbage soup cook... but by night, secretly and with the nickname Black Cat, she was the greatest jewel thief in history! Now Ben's grandmother is gone, but suddenly something inexplicable happens: 1. Someone is stealing the world's most special treasures. 2. All clues point to the Black Cat. But... that's impossible, right? It's time for Ben to solve the mystery! Don't miss the second book of the funniest grandma in the world!