Olive and Jasper have never been closer -- except for one thing, Jasper is still reticent about his frequent disappearances from polite society. With the holidays approaching and no paying client on the books, Olive decides to shadow Jasper when he's unexpectedly called away. Her search brings her to Holly Hill Lodge where an eclectic group has gathered to celebrate an old-fashioned English Christmas. The guest list includes a celebrated lawn tennis champion, a fussy scientist studying snowflakes, a persuasive luggage salesman, a famous lady traveler, and the family's eccentric aunt who has a fondness for the newfangled drinks called cocktails. When the butler goes missing, Olive and Jasper must work together to solve the Christmas crime as well as the secret Jasper hides.