It’s Sandra’s birthday, and her mum thinks Sandra’s bizarre dream might solve the formula she’s working on – so there’s no time for birthday parties! Sandra’s upset, but when she dreams her mum is kidnapped, Sandra rushes to warn her.

Instead she finds the Man in the Full-Length Coat, who is determined to destroy the secret formula – and anyone who knows about it.

Includes a guide to reading in the car and not throwing up!