Not sure if I am allowed to plug stuff here, but I wrote a short book a while ago about all the ghosts, spirits, magic and so on in Thailand. It was based on an article I wrote for a magazine a while ago and grew into something larger. I mostly just wrote it as I became interested in the topic after researching it.
It is only on Kindle though. It's called Haunted Thailand: Ghosts and Spirits in the Land of Smiles. It might be of interest if you enjoyed the above. Apologies if this is not allowed or annoying, it just fits exactly with the topic.