Extraterrestrial Hitchhikers by Preston Dennett Imagine driving along a remote highway and you see someone stick out their thumb, asking for a ride. You normally don’t pick up random hitchhikers, but for some inexplicable reason, you feel compelled to stop. The hitchhiker, you now realize, looks weird, is dressed strangely, and starts to behave in unusual ways. Suddenly you realize that the hitchhiker is not human. This may sound crazy, but the fact is, there are more than a dozen cases on re...