The holidays are Sophie Winston's favorite time of year. But this season, there seem to be more mishaps than mistletoe. First, Horace Scroggins tumbles from a balcony during his office Christmas party. Then, Sophie's neighbor takes a fall from his ladder while decorating his roof with lights. But it's the cookie swap that really starts her wondering who's naughty or nice...

Sophie arrives at the annual event with high spirits and thirteen dozen chocolate-drizzled gingersnaps. But when an argument erupts and a murder ensues, it becomes clear that the recent string of events is anything but accidental. Now Sophie has to make a list of suspects...and check it twice!