An unknown maniac has been terrorizing the inhabitants of Yak's Animal and Bird Life Park and Children's Zoo in Hong Kong. Presented with the evidence of a single feather and a strip of cloth from a black umbrella, Chief Inspector Harry Feiffer must execute justice.
William Marshall (or William Leonard Marshall) (born 1944, Australia) is an Australian author, best known for his Hong Kong-based "Yellowthread Street" mystery novels, some of which were used as the basis for a British TV series.
An entertaining and oddball police romp. It's extremely quirky... a police/detective story in the style of "Catch-22". I have not read the first 11 books of the Yellowthread Street series, but the characters were accessible. The (primary) crime itself is anything but light and a seemingly impossible mystery to solve, but the rapid volleying between story threads and characters drives the story forward, making this book a quick and interesting read.
A Yellowthread Street mystery with the typical rapid switching from group to group until at least two plot strands meet, but this one is pretty bloody with slaughtered zoo animals. I can't say for sure just what the solution to the mystery was. The title refers to a strange feather, the only clue.