"A reluctant ex-spy with demons of her own, Elinor finds herself facing down one of the most dangerous organized crime gangs in London, ultimately exposing corruption from Scotland Yard to the highest levels of government"--

While working with the Australian Secret Service on a dangerous mission, teenaged spy Alex Rider uncovers information about his parents

Fifteen-year-old twins Rich and Jade find themselves in serious trouble when their long-lost father is kidnapped and their attempts to rescue him involve them in a dangerous international plot to control the world's oil.

"Nesta Archeron has always been prickly-proud, swift to anger, and slow to forgive. And ever since being forced into the Cauldron and becoming High Fae against her will, she's struggled to find a place for herself within the strange, deadly world she inhabits. Worse, she can't seem to move past the horrors of the war with Hybern and all she lost in it. The one person who ignites her temper more than any other is Cassian, the battle-scarred warrior...

"The president's daughter has been kidnapped by the elusive and lethal Ghost Cell. Quest (Q) and Angela are in hot pursuit with vicious winds and blinding rain thwarting them at every turn. It's a desperate high stakes chase"--

Eight years after being kidnapped Addie Webster, now sixteen, resurfaces under mysterious circumstances, significantly changed, and her childhood best friend, Darrow Fergusson, is asked by a national security advisor to spy on her to uncover whether she is a threat to her father's Presidency or the nation.

Teen spy Alex Rider is sent to a maximum security facility in Gibraltar to impersonate Julius Grief while seeking information about a new criminal organization called Nightshade.

James embarks on a dangerous mission for the CHERUB agency, taking down the world's most powerful drug lord, putting his own safety aside in the hopes of ridding the streets of dangerous drugs.

1865—Marietta Hughes never wanted to be a spy, but the family legacy of espionage is thrust upon her as the War Between the States rolls on. Unknown to her, the Knights of the Golden Circle—a Confederate secret society bent on destroying the Union her brother died for—has been meeting in a hidden lair beneath her home. Faced with the secrets of her late husband and his brother, whom she thought she could trust with anything, Marietta's

...

"After thwarting the ghost cell's chemical attack in Chicago, Q and his stepsister Angela arrive in San Francisco to continue their parents' concert tour. They find themselves helping Boone and the S.O.S. team in the final showdown with the ghost cell and its leader, Number One"--