In award-winning author Elizabeth J. Duncan's tenth Penny Brannigan mystery, Welsh amateur sleuth Penny Brannigan attends a dinner party at a posh country house--where a historic chair disappears and a waiter is murdered.

Artist and spa owner Penny Brannigan is dressed to the nines for a formal dinner at a charming country house. After dinner, the guests adjourn to the library for a private exhibition of the Black Chair, a precious piece of Welsh literary history awarded in 1917 to poet Hedd Wyn. But to the guests' shock, the newly restored bardic chair is missing. And then Penny discovers the rain-soaked body of a waiter.

When Penny learns that the victim was the nephew of one of her employees, she is determined to find the killer. Meanwhile, the local police search for the Black Chair. The Prince of Wales is traveling north to see the chair, so time is not on their side. A visit to a nursing home to consult an ex-thief convinces Penny that the Black Chair is connected to the waiter's murder. She rushes to Dublin to confront a disagreeable antiquarian, a gaggle of unsavory travelers, and an eccentric herbalist who seems to have something to hide. Can Penny find the chair and the culprit before she is laid to rest in the green grass of Wales?