I am aware of a UK pedophile who fled to Taiwan and taught English here. The British trade office couldn’t get him extradited for some reason, but kept visiting his workplaces etc. to let everyone know about his past and get him fired. The idea was that if he ran out of money, he wouldn’t be able to stay. So that’s how these things are handled, apparently. (Strange–I was under the impression that Taiwan could extradite foreigners if the government really wants to, treaty or no treaty.)
A colleague told me about her American ex-husband, who insisted on keeping their wealth in the form of gold coins. After getting married and getting pregnant–indeed, while on her way to the hospital to give birth–the husband disappeared, along with all the gold coins. She spent the better part of a decade unsuccessfully attempting to track him down in the USA, and lobbying legislators to pass laws that would allow her to get a divorce without him (which she finally did). The man’s family sided with her. Apparently the guy had mental issues–paranoia, I think.