The Infinite Realms Omnibus. Infinite Realms, #7

He agreed to one last job, and that job is going to kill him. When Riyun Molliro prevents a superior officer from committing a war crime, it destroys his career. With opportunities in the Outer Sphere drying up for his mercenary team, things look hopeless. Then comes the call he's been desperate for, an opportunity that could turn everything around and salvage the group that has become like family to him.
The job: locate a powerful executive's missing daughter. It should be simple enough, but the search opens doors better left closed. Pick up this collection of all six books in the high-octane, dimension-hopping science fiction thriller series, and take a wild ride through the Infinite Realms.