A swoonworthy and suspenseful holiday rom-com that will make fans of Ally Carter and Carlie Walker laugh out loud and fall completely in love this Christmas season.

"The holiday mashup of my dreams" -Lauren Blakely, #1 New York Times bestseller

Scarlett Payne and Nathan Lambros agree on exactly one thing: they both despise Christmas. But when Scarlett receives a cryptic letter--from someone claiming to be Santa and threatening to sabotage New York's Santa Claus Con--they're the only two FBI agents who can stop the holiday spectacle from turning into a national disaster. Unfortunately, the last time Scarlett saw her former rival, he was breaking her heart. So she's not exactly eager to ask the grumpiest agent she knows for help, but he's sadly great at going undercover.

After years of deep cover, Nathan was ready to hand over his badge ... until Scarlett pulls him into one last operation. He's not sure which is worse--pretending to be Santa or working with the woman he loves but had to push away.

Beneath fake beards and forced cheer, old feelings refuse to stay buried. With one day, one Con, and one mysterious enemy closing in, these two self-proclaimed Grinches are about to find out what's more difficult: saving Christmas ... or risking their hearts all over again.