A convicted thief in Dartmoor prison hides the location of the stolen Bank of England printing plates inside three music boxes. When the innocent purchasers of the boxes start to be murdered, Holmes and Watson investigate.
1927
1953
2006
2018
1940
1947
1967
1919
1955
2020
1968
1912
2016
1942
1930
1935
1933
1960
1952
