A colossal spacecraft adrift and abandoned. Is it the answer to a mystery, or the gateway to oblivion?The enigmatic vessel may hold the key to Captain Jack Grady's frantic search. But the boarding party he leads to investigate the derelict soon runs into trouble. When he is plunged into another dimension, he finds himself in a desperate struggle to survive.Battling against homicidal bots and carnivorous creatures, he fears he faces a gruesome death and worries about the fate of his crew. Marooned without a way back to his ship, he has never felt so alone in his life.Can Grady discover how to return to his own reality, or is he doomed to meet his end in a hostile world far from home?Sentinel is book two in Adrian Murphy's high-stakes science fiction action-adventure thriller series, Galaxy Flux. Perfect for space opera adventure thriller fans who'll enjoy exploring unknown galaxies with a quirky onboard artificial intelligence, a tenacious spaceship captain haunted by grief and regret, and a gung-ho weapons operator who loves blowing things up.Get Sentinel and explore uncharted galaxies today!