Titanic #2: Collision Course Unabridged edition

There?s a killer on the loose on the Titanic ; ? ; and the only people who know are four kids. Within both the luxury of the cabins and the dark underbelly of the engine rooms, Paddy, Sophie, Juliana, and Alfie have found themselves tangled in a maze of mysteries, each one deadlier than the next. Even on a ship as big as the Titanic, the young passengers are finding there are very few places to hide. And when the ship hits an iceberg, the voyage becomes more dangerous than ever.