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In page Hercule Poirot:

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Race is a highly intelligent ex-Army colonel who had a stint as a leader of the counter-intelligence division of the British spy agency MI5.[1] He is immensely rich, having inherited the fortune of Sir Laurence Eardsley.[1] The Colonel stars as a detective in four of Christie's books; he is introduced in The Man in the Brown Suit, published in 1924. He features as Hercule Poirot's good friend in Cards on the Table (1936) and Death on the Nile (1937). He appears for the last time in Sparkling Cyanide (1945), and as with his first appearance, Poirot is not a character in the novel.[citation needed]