A thief among the trees

"Elias, Helene, and Tavi are Fivers--in training to become elite military recruits for the Martial Empire at Blackcliff Academy. When they're sent on a dangerous mission to steal a heavily-guarded poison on Isle South, the soon find themselves up against surprising enemies - including other recruits. As the true horror of their assignment is revealed, these three will begin to confront the harrowing realities of Martial rule, their place in the system--and the choices they must make to survive. An original graphic novel revealing an early tale of Elias and Helene at Blackcliff, and a standalone chapter in the 'An Ember in the Ashes' mythology"--Provided by publisher.