The novel “The Lost Fleet: Relentless” by Jack Campbell was published for the first time in 2009. It’s the fifth book in The Lost Fleet series and follows “The Lost Fleet: Valiant”.

Captain John “Black Jack” Geary has to make an even more difficult decision than usual because his fleet is approaching the border with the Alliance and he doesn’t have much choice in choosing a route. This means that the enemy will most likely be waiting for his now-depleted fleet.

Eventually, Geary decides to set course for the Herado system because the information available to him indicates that there’s a Syndicate prison camp. In addition to finding some resources for his fleet, he hopes to free more Alliance soldiers. At the same time, he must continue to watch his back from the saboteurs who are hindering operations in the fleet.