Born of Ice by Sherrilyn Kenyon — book slip

In the Ichidian Universe where The League is law, most live in fear. Devyn Kell spent his life in service to the League until he learned of the double dealing and backstabbing that was costing innocent people their lives.

Refusing to play those politics, he became a Runner—someone who makes sure planets get the weapons, medicine, and supplies they need to survive. Alix Garran is a woman on the run from a past she can't escape.

Signing on to work for Devyn as a System's Engineer, she finds a cause she can fight for—and a man she can respect. But as Alix's past catches up to her, and Devyn's old enemies turn lethal, they have to fight together ... or fall alone.