THE TRIGGER MECHANISM

With help from a reclusive billionaire, teen supersoldiers tackle a cyberterrorist in this sequel to Camp Valor (2018).

The main suspense comes from wondering when the chases and firefights are finally going to start. Traumatized by the discovery that he’s been duped into mowing down a crowd of real pedestrians in what he thought was a virtual truck, online gamer Jalen Rose is recruited by Valorian agent and co-protagonist Wyatt to join him in an unauthorized mission to find the instigator, Encyte. There are suspects aplenty. Their patron, tech tycoon John Darsie, points them toward one possibility: his own employee Julie Chen, a brilliant (not to mention “tough and a little boyish, but cute”) 14-year-old gamer and software designer. Despite a series of cyber exploits, including a high-casualty riot fueled by pheromones, there are so many distracting subplots—notably the hunt for a traitor from the first volume, the arrival of a government official who orders the camp shut down because she can’t see the value of a cadre of secretly trained child warriors (go figure), and a developing relationship between Jalen and Julie—that the pedal doesn’t really hit the metal until some time after the real villain makes a tardy first entrance. Jalen is African American and Wyatt is white.

Slow off the mark and gratuitously violent but cooking with (nerve) gas by the end.