Chasing ghosts Raising monsters Killing giants.

Teens across the globe have developed incredible powers known as Legacies. Although they were meant to use these abilities to help the world, dark forces have been working against them from the shadows. Six and Sam Goode used to be part of a covert group that investigated suspicious incidents surrounding these Human Garde. Then they discovered they could no longer trust who they were working for and quit. But they'll still do whatever it takes to protect these teens. In Chasing Ghosts, Six and Sam try to track down a former charge who slipped through their fingers and who may now have become much more foe than friend. In Raising Monsters, the couple must find a way to escape from an old enemy they believed was long buried in their past. In Killing Giants, a deadly master plan is finally revealed, and it'll be up to Six, Sam, and their companions to put an end to it before it's too late.