Short stories by Agatha Christie have been published in many collections, lots of them duplicating each other. For example, The Harlequin Tea Set contains almost all the same stories as While the Light Lasts. But a little sorting out has revealed...
Marius Lovelaine has decided to extend the olive-branch and visit his estranged sister at her island-set hotel. He rallies his family together, but wife Clothilde wants nothing to do with sister or island, and opts to visit her cousin instead....