Twenty three years ago I met two young men at the turtle beach. My colleagues and I had been investigating and secretly filming the illegal tortoiseshell trade in Sri Lanka for a British prime-time TV series "Animal Detectives". I was co-producing the seven films as well as running the Environmental Investigation Agency (EIA), the organisation the films were about. It was fair to say I was exhausted. Tortoiseshell is made from the shells of hawksbill turtles, highly endangere