All the best people eagerly await each of Louise Penny's new mysteries. You have to read them in order, starting with Still Life.

Ruth's portrait is painted in The Brutal Telling, although she doesn't adopt the duck until later in the series. As long as you identified that it's one of the Chief Inspector Armand Gamache novels, full marks.

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A "Name That Author!" musical clue...
here's the most Christmasy version.