If you like action and suspense...
give these titles a try!

Terrier by Tamora Pierce
When sixteen-year-old Beka becomes "Puppy" to a pair of "Dogs," as the Provost's Guards are called, she uses her police training, natural abilities, and a touch of magic to help them solve the case of a murdered baby in Tortall's Lower City.

The Castaways by Iain Lawrence
Bad luck continues to follow Tom Tin and his mates as they find themselves aboard a formerly abandoned ship, are taught to be sailors by two black-hearted castaways they rescue, and sail to a Caribbean island where they make important new friends and enemies.

The Recruit by Robert Muchamore
James becomes a part of the highly secretive organization, CHERUB, a group of teens whose mission is to spy on terrorists and international drug dealers, hack into computers, and download crucial information for the government.

Scorpia Rising by Anthony Horowitz
Alex Rider must once again do battle against the terrorist organization responsible for the death of his parents--Scorpia--when their plot in the Middle East poses a threat to humanity, but this time around the risks are bigger and Alex will not walk away so easily.

First Strike by Jack Higgins
British twins Rich and Jade are once again thrown into danger as they try to help their spy father, John Chance, save the President of the United States from a radical group holding the White House hostage and attempting to steal the nation's nuclear launch codes.

Money Run by Jack Heath
Fifteen-year-olds Ashley and Benjamin are planning the heist of a lifetime, but they are not counting on a hit man who has plans of his own.

Mission Unstoppable by Dan Gutman
On a cross-country vacation with their parents, twins Coke and Pepsi, soon to be thirteen, fend off strange assassins as they try to come to terms with their being part of a top-secret government organization known as The Genius Files.

Young Samurai by Chris Bradford
Orphaned by a ninja pirate attack off the coast of Japan in 1611, twelve-year-old English lad Jack Fletcher is determined to prove himself, despite the bullying of fellow students, when the legendary sword master who rescued him begins training him as a samurai warrior.

The Hunt for the Red October by Tom Clancy
A dangerous race is on when the crew of the Soviet Union's new ballistic-missile submarine "Red October" attempts to defect to the United States, while being pursued by the Soviet Atlantic fleet which has been ordered to find and destroy the submarine at all costs.

Independence Hall by Roland Smith
Quest and his stepsister Angela are thrust into the dangerous world of the American Secret Service and the Israeli Mossad when they learn Angela's real mother was a former Secret Service agent who was killed by a terrorist group.

Sabriel by Garth Nix
Sabriel, daughter of the necromancer Abhorsen, must journey into the mysterious and magical Old Kingdom to rescue her father from the Land of the Dead.