Characters in The Secret Secret Passage

Supporting characters

• Reverend Green

  Also in Mystery at the Masked Ball, Mystery in the Moonlight (Clue, #9), Revenge of the Mummy, The Vanishing Vampire

• Colonel Mustard

  Also in The Case of the Invisible Cat, Revenge of the Mummy, The Vanishing Vampire, The Clue in the Crystal Ball

• Mrs. White

  Also in Mystery at the Masked Ball, Mystery in the Moonlight (Clue, #9), Revenge of the Mummy, The Vanishing Vampire, The Clue in the Crystal Ball

• Mrs. Peacock

  Also in The Case of the Invisible Cat, Mystery in the Moonlight (Clue, #9), Danger After Dark

• Mr. Boddy

  Also in Who Killed Mr. Boddy?, The Case of the Invisible Cat, Mystery at the Masked Ball, Midnight Phone Calls, Mystery in the Moonlight (Clue, #9), Death by Candlelight (Clue, #11), The Haunted Gargoyle (Clue, #12), Revenge of the Mummy, The Vanishing Vampire, Danger After Dark