Characters in N or M?

Supporting characters

• Tommy Beresford

  Also in The Secret Adversary, Partners in Crime, By the Pricking of My Thumbs, Postern of Fate, A Pot of Tea: A Short Story, Blindman's Buff: A Short Story, Finessing the King, The Adventure of the Sinister Stranger: A Short Story, The Affair of the Pink Pearl, The Ambassador's Boots: A Short Story

• Albert Batt

  Also in The Secret Adversary, By the Pricking of My Thumbs

• Tuppence Cowley

  Also in The Secret Adversary, Partners in Crime, By the Pricking of My Thumbs, Postern of Fate, A Pot of Tea: A Short Story, Blindman's Buff: A Short Story, Finessing the King, The Adventure of the Sinister Stranger: A Short Story, The Affair of the Pink Pearl, The Ambassador's Boots: A Short Story