From the #1 bestselling author of the Noah Hunter series, and Grim Measures, comes the sequel to Edge of Time. Where a former FBI agent and time traveler Brad Sheppard is once again thrust into the quantum realm so there will be a future worth returning to. Former FBI agent and time traveler Brad Sheppard witnesses an impossible murder in the Late Middle Ages, but upon returning to the present, his family has vanished. History has been rewritten. With nothing left to lose, Brad tears through the quantum realm and the centuries, desperate to restore his wife and daughter. But he must do so ...

The wall just didn’t look right. Alex has been trying to cope. Life after his deployment had been rough. His ex-wife thought he needed to stop disappointing their daughter. She was right. He would try harder. With six hours before his little girl’s fourth birthday party, he saw the anomaly. One wall was too short. Plenty of time to tear out a panel and look behind it. He found a brick wall. His house wasn’t made of brick. Behind that was another just like the first. He still had time. When the second wall came down, Alex stood and stared at the shining doorway.

Brian Partridge leapt at the chance to buy the personal property of his favorite historical author following his death, although what he received was far more than he bargained for. It didn’t take him long to discover just how the author was able to write scenes from the past with such accuracy. Of course, Brian was familiar with time machines in movies, but that was fictional—not real—and yet, before him stood one of his very own. He knew he shouldn’t step inside and turn it on, but the temptation was more than he could bear.

It’s the year 2022. Dani Peterson has been walking in the west of Ireland, conducting historical research for her dissertation. But when she seeks shelter from a storm in Aideen O’Brien’s car, she gets more history than she bargained for. Aideen is a Time Link, with secret access to time travel technology. She sends Dani to 1978 to meet a younger version of herself. The two fall in love and Dani joins Aideen in her work. Their boss is a man from 2253 named Charles Burke, who says his mission is to save the future.

With the country in the grip of the Black Death, brothers John and William fear that they will shortly die and suffer in the afterlife. But as the end draws near, they are given an unexpected choice: either to go home and spend their last six days in their familiar world, or to search for salvation across the forthcoming centuries - living each one of their remaining days 99 years after the last. John and William choose the future and find themselves in 1447, ignorant of almost everything going on. The year 1546 brings no more comfort, and 1645 challenges them further....

Scientist Beth Darlow has discovered the unimaginable. She's built a machine that allows human consciousness to travel through time—to any point in the traveler's lifetime—and relive moments of their life. An impossible breakthrough, but it's not perfect: the traveler has no way to interact with the past. They can only observe. After Beth's husband, the co-creator of the machine, dies in a tragic car accident, Beth is left to raise daughter—and continue the work they started. Mired in grief and threatened by her CEO, Beth pushes herself to the limit to prove the value of her technology.

Daniel Rice is a government science investigator whose specialty is solving seemingly intractable problems through scientific inquiry. But Daniel's intellectual strength is sorely tested by the bizarre realities he finds in the quantum world. Extra dimensions of space trap the unwary, probability replaces cause and effect, and time isn't what anyone imagined. The other side of the mirror is a place full of dangers, but it's also somewhere a dedicated scientist can uncover secrets that connect humans with something greater.

Every modern city has one week’s worth of food to feed itself. Then it will collapse. Cut off the resources to New York, Sydney, or even a mid-size metropolis, and millions will soon starve. In Zero Day Code we see those immense and open, hyper-complex, networked supercities of the new millennium die. And in the last moments we see their vengeance take form as all the best and worst traits of humanity bubble to the surface.

In the not-too-distant future, a 21-member crew launches from Earth. Their mission: to establish a temporary colony on Mars. Little do they know that colony will become permanent–and the last stand of the human race. Because, without warning, every single person left on Earth simply...vanishes. Now, a thousand years later, the resources needed to sustain life are running out, and the very existence of the Mars colony is threatened. Humankind has only one option–to return to its home planet.

Dr. Sam Anderson is one of the most celebrated scientists in history. Ten years ago, he invented a device that changed the world forever. Now his life is about to be ripped apart—and his own creation may be to blame. One fateful morning, Sam discovers that his girlfriend has been murdered and that his daughter is accused of the crime. Sam believes she's innocent, but he can't prove it. There's only one thing he can do to save his daughter: confess to the crime. And so he does. But in the future, murderers aren't sent to prison. They're sent to the past.