Alfred Hitchcock refers to the mystery as an intellectual means and suspense as an emotional means. Mystery and suspense are two intriguing essential parts of a story. Fundamentally, a mystery is referring to a puzzle. The puzzle can occur in any genre. It might be a true-life story where the truth is not known, and things need to be put together, or a fictional narration about romance, sci-fi, crime, history, where a puzzle needs to be solved.
A mystery maybe a story about something natural or supernatural, where the audience is forced to engage their intellectual reasoning in determining what the outcome or fact might be. Basically, on the other hand, suspense refers to feelings of uncertainty and anxiety.
It paints a scenario of a pressing threatening situation that needs to be resolved. Suspense makes you feel as if your emotions are being played upon. Whenever there is suspense, you become so emotional and eager to see what the next part of the story has to offer.