When Walter tries to explain Fauxlivia about Sherlock Holmes, he says "penchant for cocaine" but literary Holmes' character is actually fond of heroine. 80.180.54.131 00:02, January 5, 2017 (UTC)
Not sure which books those are, but in the Conan Doyle stories Holmes uses cocaine which "he injects in a seven-percent solution with a syringe kept in a Morocco leather case". He sometimes uses morphine, but not heroin. Hornacek (talk) (contribs) 03:07, January 5, 2017 (UTC)