A boy is trapped in a possessed car that has stalled in the path of an oncoming train. A girl is dragged into a crypt during a field trip to an eighteenth-century cemetery. A group of friends meet their fate after an unsettling visit with a backwoods psychic. And that's just the beginning.    Celebrated author Vivian Vande Velde is at her spine-tingling best in this collection of thirteen scary stories, all of which take place on Halloween night. With tales that range from the disturbing to the downright gruesome, this is one collection that teens will want to read with the lights on . . . and the doors locked.