Cowboy Conspiracy Theory by Em Petrova

They call her the Ice Queen…but he’s determined to thaw her.

Bodyguard Mathias Trace is more comfortable on the back of a horse than guarding people. But when his next job involves a brainy woman on a hunt for treasure, he’s as frustrated as he is turned on. Her pretty, delicate features and tight curves might threaten to give him whiplash, but her chilly disposition is enough to freeze any man in his tracks.
All Madeline asks for is a smart, savvy bodyguard. What she gets is a man who walks with a permanent swagger and only takes the name of his horse seriously. But she must be the first one to locate a rare artifact at the heart of an ancient conspiracy theory, and she needs his help instead of his thunderous looks…though they might actually be starting to turn her on.
Searching for an artifact believed to bring two soulmates together is dangerous work, but so are the barriers dissolving between them. As those walls crash down, their hearts are exposed, which means the woman known as the Ice Queen is sure to walk. Not that Mathias will let her get far…