Astronaut Lee Rifkin's life is about to change. NASA has done the math. The space object named Cassandra 22007 is not behaving as expected. He will lead a team on a cutting-edge ship to get a closer look. But another group wants to get there first. Who is this shadow organization that seems to be one step ahead of them? Agent Jenna Haynes works to put together the pieces that will pull the veil off those who seem to have known about Cassandra's arrival since long before NASA spotted it. What is their goal?

Dr. James Barron narrowly prevented a catastrophic interdimensional invasion in The Rift. But now he must deal with a myriad of threats as great as the one he overcame. Threats including growing rifts in the fabric of reality, anomalous superstorms, and conspiracies that just might span worlds. Most importantly, he must find a way to save a woman he can't get out of his head, Special Agent Hannah Walker, who vanished through a portal with a treacherous genius named Linus.

The day that changed Melody's life was like any other over the previous two years. She'd found she had a gift for writing, and her career as an author had almost healed the pain of losing her job. When the Secret Service rang her bell, everything changed. Something was nearing Saturn…and it was slowing down. Had she been right about the object?

FBI geneticist Mason Brown and Danish Interpol agent Jonna Nielsen have just seventy-two hours to find the missing man they call The Immortal. He's on the run across Europe and his genetic material may be the most valuable commodity in human history. There's just one problem: Someone else wants him, too. As the time to find him dwindles, Mason and Jonna seem to be one step behind a wealthy man who will stop at nothing. If the tech billionaire finds him first, it could change the economic playing field for the entire world.

In the icy darkness of the Arctic Ocean, a violent showdown between ruthless whale hunters and fervent environmentalists ends in explosive catastrophe: both ships sinking into the frigid abyss. Marooned on a desolate island, the survivors, now bitter enemies, are forced into an uneasy truce to withstand the merciless cold. Enter Jane Harper: undercover agent, razor-sharp and unflinching, wielding her wit as deftly as her fists. As she rallies the fractured group, they stumble upon ancient Viking ruins and awaken something primal and terrifying.