The psychologist and psychical researcher Stanley LeFevre Krebs had exposed the Bangs Sisters as frauds. During a séance he employed a hidden mirror and caught them tampering with a letter in an envelope and writing a reply in it under the table which they would pretend a spirit had written. The British materialization medium Rosina Mary Showers was caught in many fraudulent séances throughout her career. In 1874 during a séance with Edward William Cox a sitter looked into the cabinet and seized the spirit, the headdress fell off and was revealed to be Showers.
There are now thousands of types of tarot decks to choose from, Hello Kitty to zombies. A traditional deck has 22 Major Arcana (or trumps) which are the archetypal images. There are 56 Minor Arcana cards, sixteen Court or Personality cards; the Kings, Queens, Princes and Pages, just like modern playing cards. There are four elements or suits: Fire, Earth, Air and Water, with 10 cards in each. There are no inherently negative cards.