Jurrasic Park: by Michael Crichton.

I saw the film first, and it was scariest at the level of the thought that some rich guy from US would actually do this! The whole creating of the park, I mean.

When reading the original book however the interesting part was how the big sister - with intelligence and courage - was the one who knew and was the savvy one who saved the poarty at one point while the kid brother was little and natural kid; in the film they changed it to big brother saves and knows while little sister is silly.

A similar change was made in the two versions of Hitchcock's film "The Man Who Knew Too Much" - the original English version had a mother who is a champion at shooting and it is her courageous kidnapped daughter who walks the edge of a terrace when the expert marksman mother saves her by shooting the villain pursuing the daughter, calm and unerring. The father is not short of manhood - he fights villains with his mind and fists both. The later version lacked the tense and intelligent edge and made up with colour and hysterics and music.