Captive by K. M. Fawcett

Rookie cop Addy Dawson must escape her alien captors. Caged with a brazen alpha gladiator claiming to be her mate, Addy refuses to breed warriors for the Survival Race—a blood sport where the last man alive wins. Nothing and no one will stop her from finding a way home, including the exasperating rogue determined to seduce her. 

Years of killing for entertainment have turned Max into a hardened beast. The only time he feels human is when at stud. But when a fiery woman from his home world rejects him, her rebellious spirit awakens a part of his soul he thought long dead. 

Bound together by a desire for freedom, Addy and Max will risk torture or worse to break out. But the hunted pair will never find refuge unless they can learn to trust each other with their lives…and their hearts.