Colin Cotterill was born in London in 1952. He trained as a teacher and worked in Israel, Australia, the US, and Japan before training teachers in Thailand and on the Burmese border. He wrote and produced a language teaching series for Thai national television and spent several years in Laos. Colin is involved in a number of social projects, many to benefit children. With his wife he set up a book and scholarship program in Laos and runs a small school for the children of Burmese migrants near his home.

All the while Colin continues with his two other passions: cartooning and writing. Since 2000 he has written over fifteen books, including the Dr. Siri crime series set in Laos. Colin lives in Chumphon in the south of Thailand with his wife where he rides his bicycle along the coast, decapitates coconuts, eats a lot of squid, plays with his dogs, and occasionally sits down to write.