Andrew McGregor Marshall wrote about the suspected murder of Prince Mahidol, by Bhumipol who later became king--

https://www.theguardian.com/world/2016/jul/22/andrew-macgregor-marshall-anti-monarchist-thailand-wife-detained Man in photo is then Crown Prince, son of Bhumipol, who is now king of Thailand. Be careful in Thailand, there is zero tolerance. 5-2-2018