Bertha Cool was in a flap. The distinguished Mr Homer Breckinridge had been waiting twenty minutes for Donald Lam to make an appearance, and around Mr Breckinridge was the heady aroma of C-A-S-H.

Then Donald appeared and in no time found himself hired to investigate an insurance claim. ‘Such nice, safe, respectable work’, purred Bertha, ‘and it’s up for grabs.’

But it didn’t take Donald long to find out he was anything but safe and that he was the one up for grabs …