Just like Jennings

'Dear Sir, There is a suspicious character in Miller's Wood who may be a secret agent.

You can tell him because he has a beard. Also dark glasses and some more things. I have no motive and hope this does not matter.' When Jennings and Darbishire happen upon a mysterious stranger, they are determined to prove he is a spy.

Armed with a lemonade bottle and some chalk dust, their attempts to turn detective go astray, much to the amusement of the other schoolboys.

Then, the appearance of an abominable snow-cat and that unfortunate incident with Mr Wilkin's antique vases.

It's going to be difficult to stay out of trouble this term; but isn't that just like Jennings?