He signed his name, “Frederick Algernon Trotteville.”

“I bet you never sign your full initials, Fatty,” said Pip, taking the pen next - “ ‘F.A.T.’ ”

“Well, I don’t,” said Fatty. “You wouldn’t either, if you had my initials and were fat. It would be just asking for trouble.”

Pip signed his name, “Philip Hilton.” Then Daisy signed hers, “Margaret Daykin.”

“Now you, little Bets,” said Fatty, handing her the pen. “Best writing, please.”

Sticking her tongue well out, Bets signed her full name in rather straggling writing, “Elizabeth Hilton,” but after it she wrote, “Bets.”

“Just in case he forgets that Elizabeth is me,” she explained.

“He wouldn’t,” said Fatty. “I bet he never forgets a thing. He’s very clever. You aren’t made an inspector of police unless you’ve got brains. We’re lucky to have him for our friend.”

They were - but the Inspector liked and admired the Five Find-Outers too. They had been of great help to him in two difficult cases.

“I hope we can be Find-Outers again,” said Bets.