MacGregor's fast-paced and edgy thriller has fascinating physical descriptions of the transitions between time periods. Details of the strain that time travel puts on a body are so vivid and convincing that you may wonder if the author has experienced it! But the story has so many characters bouncing back and forth between time periods that the plot becomes confusing.

Nora McKee and a group of colleagues are part of an experimental time-travel program. The travelers all have implanted biochips that allow them to move from past to future. With this fascinating power comes responsibility and danger; several greedy, power-hungry groups want to profit from the program.

A number of people have disappeared during the development process, including Nora's mother. As the group travels in search of answers, they have a difficult time telling who is an ally and who is the enemy. In addition, the physical experience of time travel is taking a toll on their health. (PINNACLE, Nov., 416 pp., $6.99)

Reviewed by: 
Roseann Marlett