"Archived copy". Archived from the original on 2007-03-01. Retrieved 2009-02-24. ↑ Inness (1998), 250. ↑ Hallam (2000), 49. ↑ Re-printed as The Clue of the Faceless Criminal. ↑ Re-printed as The Case of the Forgetful Patient. ↑ Re-printed as Mystery of Rogue's Cave. ↑ Re-printed as The Case of the Dangerous Remedy.