It's Darkest This Way. This Way, #4

Evan Greggs continues the twenty-three year search for his sister, Sandra, in this fourth and final installment of the "This Way" series. Armed with only his weapon, the two pictures of Sandra drawn by Luna Payne, and the information given to him by an older man who was present during the destruction of Corvallis soon after the Bulls invaded Earth, Evan prepares to journey to Helmet's stronghold near Snoqualmie.
Torn between his obsession with finding his sister and remaining with his traveling companions, his love for Rebecca Collins, and the promise of electricity, running water, and safety at Base Bravo, Evan and crew must first face Little Jack's gang. Book 1: "It's Better This Way"Book 2: "It's Harder This Way"Book 3: "It's Darker This Way"Book 4: "It's Darkest This Way"