Three Broken Threads.

Arriving at Sir Henry's hotel, Holmes examines the register. Tricking the clerk into thinking he knows the two names added since Sir Henry, he gleans information that excludes the two from suspicion. So, the detective concludes, the watcher has not settled in Henry's hotel, and as such, wants very much to see but not to be seen.
Heading upstairs, the pair runs into a flustered Sir Henry, enraged at the theft of a second boot, this time an old one. Denouncing the hotel staff, Sir Henry is surprised at Holmes' suggestion that the thefts may have something to do with the case.
At lunch, Holme…