Vampirates: Demons of the Ocean
by Justin Somper (Simon & Schuster)

Twins Connor and Grace are rescued from a shipwreck in a storm – but by different ships. Connor is now aboard with pirates, learning to swab the decks and wield a cutlass – while Grace wanders the eerie Vampirate ship, crewed by demons and vampires. It’s hard to know which one has been lucky as the brother and sister strive to find each other across the high seas.