I suck at summaries, so why don't you just read it to find out.
Things seem to have settled down this year, well almost. *Alana Riddle, (oddly sharing the same name as Voldemort, (Tom Riddle)) comes to Hogwarts. But all that happens to her is trouble-like when she is trapped on a run-away train, (aka Hogwarts Express)
Harry meets a mysterious girl with a bizarre past. Did she know something Harry didn't ?