Museums Can Be Murder, Book 11 — Nancy Jill Thames

The Christmas holidays get a morbid start when Jillian Bradley's neice Kaitlin Romero discovers the body of her boss at the Metropolitan Museum of Art. An envelope containing rare Charles Dickens illustrations is missing, and Detective Mickey Wells must reluctantly rely on Jillian's help to solve the crime.
The case goes international when the vendor of the illustrations is murdered and linked to possible fraud. As always, Jillian's Yorkie companion Teddy helps solve the case by discovering an important clue. Afternoon tea included!