It's a week before Christmas when Hettie and Tilly set out on a dangerous case for The No. 2 Feline Detective Agency. Lady Eloise Crabstock-Singe has summoned them to Crabstock Manor on the Cornish Coast, convinced a servant cat  haunts the Manor intent on killing off all the Crabstocks.

Should they put their trust in Absalom and Lamorna Tweek? What is Evergreen Flinch searching for? And will Saffron Bunn's cooking get any better?

Through blizzard and storm, stranded on the notorious Bodkin Moor and laid up at Jam Makers Inn, will Hettie and Tilly save the day and get home in time for Christmas dinner?