Ethan: I pleasure women for money. I use sex to make my living, where before I used violence. But then I meet her. Isla. The first moment I see her, I know she'll be trouble. She wants me and I want her, but we are far too different for it to be more than a fling. So I tell her: "We meet this thing between us head on, and then we move on." Simple. Until it isn't. Isla: He scares me. He challenges me. And he makes me dizzy with desire. But Ethan Foston will be my downfall if I let him. He's burrowed his way under my skin and so I agree to his terms, one night. A fling. Nothing more. But there are people out to get both of us, and the more we try to keep our distance, the more entangled we become. We had a deal: head on, then move on. But moving on is hard to do when you're falling in love. **Warning - Head On contains adult themes. Not intended for readers under the age of eighteen. Trigger warning for violence and consensual non-consent. This is not a dark romance, but it is romantic suspense and therefore it does contain adult and dark-ish themes in places.**