'There is trouble afoot in Mr Haggardy’s classroom. An unexplainable explosion in a science experiment wreaks havoc once again and Principal Penwright knows exactly who to blame! Can Brian and his brothers solve the mystery before the snooping Mrs Witherbottom discovers the unbelievable truth behind all the shenanigans?
'Brian, David and Simon Bradberrie return in part two of their alien adventure. Mischief and mayhem abounds whenever they are involved. The school is a disaster zone but is it really their fault this time?' (Publication summary)