Here's an interesting story about a "perfect hire" that quickly went very, very wrong. It has some intriguing twists, including a serendipitous sighting of the bad guy by an FBI agent, proving, I suppose, that such things don't just happen in the movies.
Would you have fallen for the scam of this embezzler? Many, perhaps most employers, don't check references, or at least don't check them carefully. You always should, especially where the new hire is going to be handling your money. This scammer was good, but there were warning flags which, if heeded, might have avoided a lot of trouble.