The Kill Order is by James Dashner. A prequel to the Maze Runner series. Mark and his friend Trina were in the subway when the sun flares hit the earth. As they struggle to survive the aftermath of the disaster they pick up other friends along the way, like Alec and Lana who are former soldiers. Things seem to be on the mend when they make their way to a settlement in the mountains. Then a flying ship arrives firing darts at the villagers. Those hit die almost immediately, others develop a sickness spread by a virus that drives them mad. Mark and his friends try to discover the source of the virus while trying to escape those maddened by the disease.
Ratings: 8th grade - 8 out of 10 - V (violence).