Peter Dickinson's The Glass-Sided Ants' Nest

     "We've got a lovely little set-up here, all airy-fairy. Just the thing for Pibble, I said, the moment I'd seen the Kus."

    "Coos?"

    "Every single member of the household, my dear, is called Ku. They're a tribe from New Guinea, somewhere. Deceased's a Ku, suspects all Kus, witnesses all Kus. Except there aren't any."

 

This was totally bats. But I really mean that in the best possible way...

 

During World War II, the Ku tribe sheltered a downed Australian airman. The Japanese found out and killed everyone they could lay their hands on, and this included the British anthropologist studying the tribe. The anthropologist's daughter Elizabeth has brought the remains of the tribe to London, where they live in a house, attempting to keep up their tribal customs in an alien environment. They all take the last name Ku.

 

Then the chief of the tribe, Aaron Ku, is bashed over the head by a lefty at the top of the stairs.

 

Elizabeth has gotten her own Ph.D. in anthropology after the war, and this arrangement will enable her to keep up her father's work more comfortably, with the tribe arranged for viewing like ants tunnelling in a kid's glass terrarium. And one of the things she tells Pibble is that, while the Kus don't approve of murder, of course, if they were to murder someone, they would naturally use the left hand, because that's the hand of evil deeds.

 

Most of the clues kind of go like that. This is the first case (out of six) with Chief Inspector Jimmy Pibble by Dickinson, but in his world he's already got a reputation. We're told he's the one who gets these kind of cases. He interviews an old lag at one point:

    "Hope you don't mind me asking, but are you Pibble?"

    "Yes," said Pibble. "But how did you know?"

    "Kinky little case like vis. Vey wouldn't send one of the ver big boys out on it--too much to lose, nuffing to gain. Good luck, ven."

There is a lot of slang and dialect. Pibble himself uses "Crippen" as an oath amusingly enough, but a fair amount of it might be easier for a Brit...

A second murder is in progress when it's thwarted by Pibble discovering the culprit.

Pretty entertaining. I'd read another from the series. Do you know it? Is this representative? 

Vintage Mystery Scavenger Hunt

Silver Age (1968). Staircase.