The Ring of Thoth

The Ring of Thoth is a short story written by Arthur Conan Doyle first published in The Cornhill Magazine in january 1890.
Mr. John Vansittart Smith is a student of Egyptology who travels to France to see some papyri in the Louvre Museum. Tired from his visit, he sits in a corner of the museum and dozed. When he wakes up, the museum is closed and he is locked inside...