It was early evening and Inspector Cosgrove sat behind his desk re-reading the letter that had been sent to him that morning.

“Anything interesting?” asked Sergeant Grimes.

After Cosgrove had finished reading the letter, he played with it like a cat playing with a mouse. Then letting it fall onto his desk, he picked up the envelope inspecting the postmark.

“Might be.” he said.

Suddenly, without reason, Cosgrove leapt out of his seat and from the cloak stand grabbed his bowler hat. “Meet me downstairs in a couple of minutes with two constables!” he ordered the sergeant.

James Carter with the two women were being driven to the British Museum, this time courtesy of the Museum Director, Monsieur Rene de Pont. James had written to the Director to explain that, after seeing to his late brother's affairs, he was now in possession of his diary that could possibly lead to the discovery of the Fifth Beetle. James had received a reply by return post, inviting him to attend a meeting at the Museum.

As their cab pulled up outside the main entrance, Agatha took the opportunity to recap. “Remember, we still hold the trump card with this diary. If Monsieur de Pont wants it for the Museum, then the price he pays is to help us...