The Edge of the Earth - The Lucky 13 Series Book 3 - the Lucky 13 Series, #3

As Maddie and Alex continue on their quest to find out all the secrets of her Dad's past, they set off on a turbulent road trip with Renir's soldiers always two steps behind,. Once they take shelter at the safe house located in Mexico, they have a chance to rest, train, and plan their next moves, all while working on resolving the issues of their volatile relationship. But their time alone is cut short when they are asked to help Marcus, Mitra, and other members of the Brotherhood with a trafficking case in Houston.
The outcome sparks a chain of events that leads to Angus getting out of prison and Cassie showing up with some life-altering news. In the meantime, Renir's son Landon Black has taken over operations for The Phoenix Academy and his reign of terror threatens everything they hold dear. Now it's up to The Brotherhood to come together one last time to save everyone they love, themselves, and possibly the world, from Landon's diabolical ways.
The Edge of the Earth by K. L. Lawson is the epic conclusion to The Lucky 13 Series Trilogy. Books 1 and 2 are available to purchase through most major online bookstores.