Junior

 Scat by Carl Hiaasen

Another action packed eco mystery, by Car Liassen, begins with the disappearance of Nick's teacher during a school field trip to the Black swamp. Although Nick is preoccupied with his father's sudden return from Iraq, he sets out with classmate Marta to discover what is going on. The addition of a corrupt oil prospector, a crazy eco-activist and panther sightings add together to the mystery in this fast paced adventure.

Senior

 The Red Queen by Philippa Gregory

Companion novel to the White Queen this is this is the story of Margaret Beaufort from the House of Lancaster. Married at 14 to a man twice her age Margaret's ambition is to put her son Henry on the throne. This tale of conspiracy and ambition was set during the War of the Roses and will enthral Gregory's fans.