1970's communist Laos. Siri Paiboun, national coroner, starts to investigate when blank papers are found on the body of Dr. Buagaew, a blind dentist hit by a truck. Paiboun quickly discovers encoded writing in invisible ink, which he eventually realizes are a series of chess moves. A trip to the southern Laotian city of Pakse draws him deeper into complex political intrigue. Some descriptions of violence. 2007.