How to Make a Scary Movie

I was never a very good math student, but I figured out why: my homework never involved watching horror movies.

A team from King's College London, headed by mathematician Anna Sigler, spent two weeks watching scores of horror flicks, including Psycho, The Exorcist, The Texas Chainsaw Massacre and Silence of the Lambs.

They then they came up a formula which they say will give the perfect result every time. It's: (es+u+cs+t) squared +s+ (tl+f)/2 + (a+dr+fs)/n + sin x – 1.