Practically all of the first, Wilmer, series survives intact - the first half of "The Abbey Grange" and the second of "The Bruce Partington Plans" are currently missing. The Cushing run fares far worse, with only "A Study in Scarlet", both parts of "The Hound of the Baskervilles", "The Boscombe Valley Mystery", "The Sign of Four" and "The Blue Carbuncle" still known to exist.