Lethal Engagement (an Unbounded Novella) - Teyla Branton

Guard, Protect, and Above All, Stay Alive Two months after the announcement that rocked the entire world, Mari Jorgenson is going undercover to protect the man who has become the face of the Unbounded. What's not to like? Expensive clothes, a great disguise, a chance to play with knives-and all with a Renegade partner she might just be falling for.
Mari can't think of a better assignment for practicing her shifting ability. But when everything goes horribly wrong on the first day, it will take everything she has-and more-if she and her friends are to keep humanity's best hope for peace alive long enough to unite the world. Along the way, Mari glimpses within herself a darkness that threatens to turn her into the very evil she is fighting.
Join Mari, Keene, Jace, Cort, and other Renegades from the main Unbounded series as Mari shifts through an adventure that will ultimately set the stage for the greatest and final battle with the Emporium.
Please note that Lethal Engagement is not as long as the books from Erin's viewpoint, but it is the same size as many short novels. The events take place in the Unbounded timeline after The Reckoning (Unbounded Book 4). As some of the events in book 4 are referenced, readers will better appreciate Lethal Engagement after reading The Reckoning.