Tormented

"On your knees."
 
Captured, collared, and caged is the last place ice-cold Council assassin Jade Lakotesh wants to be, but when she discovers she's sharing her prison with her target, a ripped barbarian who blames her employer for his fate, she accepts only one of them will leave the cell alive.

Walsh Ryker hit rock bottom with the deaths of those he loved most. Now, he's plummeted to a new low, trapped with a cellmate as ice cold as she is stunningly hot. She's out for blood, lacks any ability to cooperate…and leaves him more alive than he's felt in years. For a man no longer interested in feeling, she may be his greatest hazard to date.

He never expects to see her as more than the enemy. She never expects to crave his rough, raw commands.

But as dangers mount, and they are forced to work together to defeat a shared threat, will the scorching passion between these two enemies entomb them in the dark forever—or be the key that sets them free?
 
The third book in the Condemned Series, Tormented is a standalone, action-packed, sexy sci-fi, enemies-to-lovers romance with a HEA and a dirty-talking, strong alpha who meets his match where he least expects. You won't be able to put it down.