Cassidy Kincaide owns Trifles & Folly, an antique/curio store and high-end pawn shop in Charleston, South Carolina, that is more than what it seems. Dangerous magical and supernatural items sometimes find their way into mortal hands or onto the market, and Cassidy is part of a shadowy Alliance of mortals and mages whose job it is to take those deadly curiosities out of circulation.

Friends since their orphanage childhood, Joel “Ridge” Breckinridge and Garrett “Rett” Kennard rose through the ranks of the Landrian army together, from teenaged conscripts to seasoned fighters. Together, they became the most feared team of assassins in Landria. When wandering mystic Yefim Makary becomes the darling of disenchanted aristocrats, Rett and Ridge fear Makary - or the Witch Lord, as his followers call him - is a threat to the crown. As treasonous whispers spread, Ridge and Rett go rogue to stop the threat, save the kingdom, and protect the king.

Marguerite Florian is a spy with two problems. A former employer wants her dead, and one of her new bodyguards is a far too good-looking paladin with a martyr complex.

In the glitzy underground world of illegal auctions, fast cars, and stolen magical artifacts, John "Dom" Domenici knows he's out of his depth. But he needs the job at Kempthorne & Co. So when his boss, Alexander Kempthorne, wants him on a special case to track down an illegal artifact dealer, Dom can't say no. It shouldn't matter that the billionaire is sexy as sin, and it really shouldn't matter that there's an American agent stalking Dom, an agent who knows more than he should about Dom's case.

Supernatural Secret Service agents Owen Sharps and Calvin Springfield meet on the train to their new assignment in St. Louis, and sparks fly between them. But it's 1897, and they need to be very careful—falling in love can be dangerous for men like them.