Book excerpt: In From Dusk Till Dawn the fertile imagination of Quentin Tarantino ventured into new territory - the world of vampires. In the film, a pair of hard-boiled natural born killers, the Gecko brothers, on the lam from the police, kidnap a family in a camping van and use them as camouflage to get across the border into Mexico. They reach their rendezvous at the Titty Twister bar and await the arrival of their comrades. As the long night sets in, all manner of mayhem breaks loose . . .