''Delightfully horrific and hilarious'' Eoin Colfer

Samuel Johnson has a number of problems. Samuel's dad cares more about his car than his family, Samuel's mother is lonely, and only Samuel's dog, Boswell, truly understands him.

Oh, and as if things couldn't get any worse, Samuel's neighbours, led by the villainous Mrs Abernathy, are trying to open the gates of hell. It's up to Samuel to stop them, except nobody will believe him, and time is running out . . .

Now the fate of humanity lies in the hands of one small boy, an even smaller dog, and a very unlucky demon named Nurd . . .