The Adventure of the Retired Colourman

"The Adventure of the Retired Colourman" (1926), one of the 56 Sherlock Holmes short stories written by British author Sir Arthur Conan Doyle, is one of 12 stories in the cycle collected as The Case-Book of Sherlock Holmes.
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.