What is a foreshadow in the hitchhiker by Lucille Fletcher?

In Lucille Fletcher's play "The Hitchhiker," foreshadowing is used to build suspense and hint at the play's shocking twist. The protagonist's conversations with the hitchhiker subtly reveal his sinister nature and the underlying tension of danger. The hitchhiker's calm demeanor and cryptic remarks about fate and death create an ominous atmosphere, suggesting that not all is as it seems. This technique effectively prepares the audience for the eventual revelation of the hitchhiker's true identity and intentions.