[edbro]

Not the vampire genre but what about some true life adventures that would appeal to a teenage boy?

Into Thin Air by Jon Krakauer
In the Heart of the Sea: The Tragedy of the Whaleship Essex by Nathaniel Philbrick
Alone: The Classic Polar Adventure by Richard Evelyn Byrd

Or, not adventures but other great true stories:
Seabiscuit: An American Legend by Laura Hillenbrand
The Devil in White City by Erik Larson
Thunderstruck by Erik Larson

All of these are great reads full of action/adventure.

Edit:
I remember another great adventure that happens to be free and available here on MR:
Two Years Before the Mast by Richard Dana