Meet Dirty Bertie - a boy with nose-pickingly disgusting habits!

He's full to bursting with madcap plans and crazy ideas, and if it's trouble you're after, look no further - Bertie's sure to be up to his neck in it.

Bertie's third book finds him facing the shame of losing a dare with Know-All Nick and having to wear his pants to school, playing the part of the dog in the local amateur dramatic society's production of Oliver! and taking Whiffer to Royston Rich's birthday party, where Whiffer leaves a very unwelcome present...