Wrong Cabin, Right Time by C. Hallman

She’s planning their life together. He’s planning to end hers. A serendipitous meet-cute between a bubbly travel influencer and a reclusive billionaire gets twisted in this immensely sexy, darkly funny romance.
One misdirection, and effervescent vacation-home reviewer Sage Featherstone comes bounding up to the door of the wrong cabin. Lucky her.
The owner is Travis Blacksburg, a broody, out-of-this-world-sexy tech billionaire. A quick look at that GQ body, and Sage’s fantasies are running wild. So are Travis’s. With Sage’s spirited personality, mop of pink hair, and lack of boundaries, Travis can’t wait to kill her. Because that’s what he does. Thirty-eight victims so far. And his latest target just walked into his life, looking absolutely irresistible.
But for a man who usually takes great care with his kills, it’s getting complicated. He’s falling for her. And when Sage catches on to Travis’s secret life, she doesn’t run screaming. Maybe she can fix him. Her life could depend on it, and he’s too hot to abandon. They’re taking ride-or-die romance to the next level, but his moral vices aren’t the only unexpected threat to their happily ever after…