Kau is the estranged husband of Lida and father of Lue.  He is an unseen character. He is the son of Xang.

Kau is currently in prison for a murder committed while in a violent rage. Xang believes that Kau was possessed by demons as his previous behavior had been exemplary. Xang believes that Lue is also being possessed by demons and that the doctors cannot help him.

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