Monocaine or monocane may refer to: Monocaine hydrochloride (butethamine hydrochloride), a local anesthetic Monocane, a fictitious drug that takes the colour from whoever or whatever ingests it; it also causes aggression and insanity (The Invisible Man). Monocane, a fictional poison in the Matlock episodes "The Nurse", "The Heist", "The Fatal Seduction: Part 2" and "The Hucksters". Monocane, a fictional poison in the Jekyll and Hyde TV show. Monocane, a fictional poison in the Perry Mason TV movie A Perry Mason Mystery: The Case of the Lethal Lifestyle Monocane, a fictional poison in the McBride TV movie The Doctor is Out ... Really Out Monocane, a fictional poison in the Diagnosis Murder TV series show, episode Murder Two part 1 & part 2 1997 Monocaine is referred to in the lyrics of the third verse of the song "Transmaniacon MC" by the band Blue Öyster Cult.