Aconitine

The poison, according to Greek mythology, could be traced to the gates of hell. It dripped from the jaws of Cerberus, the hulking three-headed dog that guarded the entrance to the underworld. For centuries, it's carried the  taint of dark magic. The ancient Greeks called it the Queen of Poisons, the deadliest of all. People called it wolfsbane, dogsbane, even - rather horrifyingly - wifesbane. The poison's reputation has intrigued writers over the years. Oscar Wilde used it in his story of a determined murderer, Lord Arthur Savile's Crime. It was used  by a character in James Joyce's…