The mention of Cagliostro always suggests the marvellous, the mysterious, the unknown. There is something cabalistic in the very sound of the name that, considering the occult phenomena performed by the strange personality who assumed it, is curiously appropriate. As an incognito it is, perhaps, the most suitable ever invented. The name fits the man like a glove; and, recalling the mystery in which his career was wrapped, one involuntarily wonders if it has ever been cleared up. In a word, what was Cagliostro really? Charlatan, adventurer, swindler, whose impostures were finally exposed by the ever-memorable Necklace Affair in which he was implicated? Or "friend of humanity," as he claimed, whose benefactions excited the enmity of the envious, who took advantage of his misfortunes to calumniate and ruin him? Knave, or martyr—which?