Rating: WARTY!
I'd been enjoying 100% success with children's novels by AJ Cosmo, until this one, which fell completely flat. The Monster That Ate My Socks, I Don't Want to Go To School, and There's a Monster in the Dark were very entertaining reads, especially for their intended age group, but this one didn't get there at all. I'm wondering if there are only so many variations on the "There's a Monster..." theme which you can exploit in children's books?
This monster does precisely what it's billed for: it eats dad's car keys, and the boy and his father have to chase it as try to trap it or bribe it to get them back, but there really isn't much going on that's entertaining. It doesn't go anywhere other than around the house, unfortunately. The story really isn't as inventive as I felt the previous ones were. I can't recommend it.