Alfred Hitchcock has been branded the undisputed king of suspense thrillers. His uncanny ability to combine psychology, spirituality and intrigue into hair-raising, spine-chilling stories that tap into our deepest fears is astonishing.

To achieve real suspense you must give the audience information Alfred Hitchcock stated that "Information" is essential to create suspense; showing the audience what the characters don’t see.

For example the information given to the audience to cause tension in Alfred Hitchcocks
The Birds is shown when Melanie Daniels is waiting outside a school when hundreds of birds gather on the playground behind her.

The MacGuffin is a film terminology for the side effect of creating pure suspense. The MacGuffin in The Birds is 'what is causing the birds to attack?' The only reason for the MacGuffin is to serve a pivotal reason for the suspense to occur. (Schickel)