Gangsta Granny

Our hero Ben is bored beyond belief after he is made to stay at his grandma's house. She's the boringest grandma ever: all she wants to do is to play Scrabble and eat cabbage soup. But there are two things Ben doesn't know about his grandma: She was once an international jewel thief AND all her life, she has been plotting to steal the Crown Jewels, and now she needs Ben's help...