In 1924 London, when shy academic Lao She meets larger-than-life Judge Dee Ren Jie, these unlikely allies investigate the murders of Chinese immigrants, all stabbed to death with a butterfly sword and must connect the dots to catch a killer before they become victims themselves.

"From the co-director of the Endangered Language Alliance, a captivating portrait of contemporary New York City through six speakers of little-known and overlooked languages, diving into the incredible history of the most linguistically diverse place ever to have existed on the planet. Half of all 7,000-plus human languages may disappear over the next century and-because many have never been recorded-when they're gone, it will be forever. Ross Perlin,...