This book will make no sense at all unless Home, the first novel in the series, is read first. The Traveler is a 3 novel series. The first two novels in the series end in cliffhanger situations.
This is an interesting series set mostly in 2037 after a 2032 disease epidemic kills over two-thirds of humans. The southwestern US is under control of a military-like criminal group called the Cartel. Expect lots of action and suspense. Most of the action occurs in Texas. The protagonist is is ex-US Army officer Marcus Battle who routinely does the seemingly very unlikely.