The Kill Order

Surviving the apocalypse was hard enough, but when Mark's community is attacked by an unknown enemy spreading a deadly virus, he's determined to find out who's responsible before the Flare infects them all ...
A prequel to the New York Times bestselling Maze Runner
series - now a series of major motion pictures starring Dylan
O'Brien!

SPOILER ALERT: Make sure you've read The
Maze Runner, The Scorch Trials and The Death Cure
first.

SEE THE FILMS. READ THE BOOKS. ENTER THE
MAZE ...

  When sun flares hit the Earth, intense heat, toxic radiation and
  flooding followed, wiping out much of the human race. Those who survived
  live in basic communities in the mountains, hunting for food.
  For Mark and his friends, surviving is difficult, and then an
  enemy arrives, infecting people with a highly contagious virus.
  Thousands die, and the virus is spreading. Worse, it's mutating,
  and people are going crazy. It's up to Mark and his friends to find
  the enemy - and a cure - before the Flare infects them all ...

Loved
The Kill Order? Check out The Fever Code
- a direct prequel to The Maze Runner!