With the Gral sent home, abandoning their posts around the colonies, humans are once again in charge of their own fate. Zane and Julia are determined to find the mysterious forty-fourth colony. They devise a plan and set into action while Lorna and Henry search the Forever World for evidence of the elusive alien race. Carl is sent into enemy territory with only a shred of hope as his guiding light. For both father and son, choice is synchronous with consequence, but how can you be sure you’ve made the right one? The Invisible Colony_ is the second installment in the hit series, The Forever World. Contains "Signs of War," a Forever World universe bonus story._