Over the course of the conversation at the fence, how does the stranger get elisa to trust him?

In his adaptation of this excerpt, laurence olivier uses high cliffs as a a background and he holds onto a knife. what's effect do these choices have?

Cameron, who has an extreme and unreasonable suspicion of other people and their motives, suffers from paranoia which is a psychological disorder characterized by delusions of persecution or grandeur, was absolutely sure that someone was following him even though he was absolutely alone and hadn't seen a car for miles and miles.

Read this exerpt from act 2 scene 2 of romeo and juliet which theme is depicted through juliet’s monologue