Book Four of The Gatekeepers brings Scarlet onto the scene, the last of the five. The Old Ones have gathered strength and through their evil organizations are determined to keep the five from coming together. Scarlet's father works for Nightrise and is manipulated into bringing her into their control. Meanwhile Matt, Pedro, Jamie, and Scott are committing themselves to finding Scarlet. Both forces are very strong and the Old Ones are as determined as the Five to triumph over the other.
The series begins with Raven's Gate and continues with Evil Star, Nightrise, and Necropolis.
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