The adventure of the retired colourman

In "The Adventure of the Retired Colourman" Sherlock Holmes is hired by a retired art supply dealer from Lewisham, Josiah Amberley, to look into his wife’s disappearance. She has left with a neighbour, Dr. Ray Ernest, taking a sizeable quantity of cash and securities. Amberley wants the two tracked down. First published in Liberty, December 18, 1926.