Watson attempts, unsuccessfully, to calm a frightened child by quacking like a duck, but he's actually sharper than usual, providing two essential clues which help Holmes solve the case. Fittingly, the puzzle involves Dr Johnson, another prominent literary figure with a loyal biographer. Watson's newly published story in The Strand Magazine, 'A Scandal in Bohemia', is also a significant story element. The last Rathbone & Bruce Holmes adventure is a congenial, lightly scholarly affair concerning nerdy collectors and an intricate puzzle which is satisfying on a cerebral level, which wasn't always the case with these films. Patricia Morison (who is apparently still with us, 100 years young and living in LA) is second only to The Spider Woman as the most dangerous femme fatale in the series, and she's a knockout. While not as atmospheric as the great middle run of the series, this is a felicitous capper to the definitive Holmes & Watson on film.