I only made a special study of forgery after joining the agency.

A private inquiry agency gets such a lot of it," said Mr.Flexen.
"Well, and if there's an error in these details, where is it?
It's not in the signature itself," said Mr.Harrison.
"Indeed, it is," said Mr.Flexen.

"It's an uncommonly good signature too.
The 'Loud' is perfect.

But the 'water' gives it away.

The forger had evidently practised it a lot.