Armchair detective

Mycroft Holmes instructing his brother from an armchair, in the story of The Greek Interpreter

An armchair detective is a fictional investigator who does not personally visit a crime scene or interview witnesses; instead, the detective either reads the story of the crime in a newspaper or has it recounted by another person. As the armchair detective never sees any of the investigation, the reader can attempt to solve the mystery on the same terms as the detective.[citation needed]

The phrase possibly originates in a Sherlock Holmes story from 1893, The Greek Interpreter, in which Holmes says of his brother Mycroft, "If the art of the detective began and ended in reasoning from an arm-chair, my brother would be the greatest criminal agent that ever lived."[1]

  1. ^ "Text from the public-domain story, accessed December 18, 2009". Sherlock-holmes.classic-literature.co.uk. Retrieved 2012-02-14.