When the magic of Scotland melds with the mystery of Halloween, nothing—not even death—can stop true love.

Growing up on the site of an ancient Pictish hillfort always held a particular magic for Callum, but lately, that magic has turned into a reality he struggles to comprehend. The cave just a mile east of town allows certain people to pass through time, and he'd met one not so long ago, forcing him to consider the truth: Scotland truly was a place full of mystery and magic. But nothing could shake him more than discovering the spirit of a bonny lass living in the basement of the visitor center where he works—nothing except being trapped in the room with her for hours on Halloween. Her name is Sorcha, she died nearly 1,500 years ago, and he's quite certain he fell in love with her in those few hours—before she disappeared on him, leaving him confused and heartbroken.