The explosive finale to the Extraordinaries trilogy by New York Times bestselling author TJ Klune. School's out for the summer and a raging heat wave has blanketed Nova City. Still, Nick's life is pretty much perfect, as he finally gets to team up with his superhero boyfriend to bring justice, protection, and disaster energy to the world.

Meanwhile, Seth, Jazz, and Gibby are setting up headquarters for Lighthouse, their hero team, Nick's dad's private investigation agency is taking off, and Nick's mother, the superhero known as TK, is right there at Nick's side. Where she's always been. Hasn't she?But something's off.

It's not just Simon Burke campaigning to 'cure' Extraordinaries. And it's not the rumours of Nick's ex-boyfriend and villain-in-the-making's escape. Something isn't right and Nick will need all his loved ones together to uncover the truth - a truth that will reveal a traitor in their midst and burn through their lives like a wild fire.