Alone in His Teacher's HousePaperback, 7 April 2010

When Mrs North asks Marvin to dog-sit for a week, his friends think he's the luckiest boy in the world. He gets paid $3 a day while Mrs North's away, with a bonus on top if everything goes smoothly. But it's not long before things start to go wrong and it looks as though Marvin won't be getting his bonus.