I know a British guy in Phuket that had a whole Condo block that he built from scratch stolen off him by some dodgy Thai's including a lawyer.
He was 130 million baht out of pocket in the end. He tried the court route to no avail. Eventually he was forced to leave Phuket by some very influential locals. He ended up in Chiang Mai.
He stayed there a few years. Eventually his money ran out and he returned to the UK. He was a decent person, a sad story and cautionary tale.