A World of Curiosities is Louise Penny's 18th novel in a series featuring the fictional character Chief Inspector Armand Gamache.

The 2022 crime mystery book follows the investigation into a series of murders in Quebec, and briefly references the real life 1989 École Polytechnique massacre.

[3] The novel was published in late 2022 just as Amazon Prime Video started streaming the television show Three Pines, adaptations of Penny's earlier books in the series.

[4] The novel is set in the fictional Quebec village of Three Pines, and features siblings Sam and Fiona Arsenault, whose mother Clotilde was killed after subjecting them both to sexual abuse in their younger years.

[2] Guardian book reporter Alison Flood, wrote that "unusually for a crime novel, leaves you feeling better about the world once you’ve finished.