However, the next morning, they find the guards knocked out and the painting stolen. Holmes learns that Lupin disguised himself as a visiting French painter, and hid before Lestrade arrived. Lupin leaves behind a letter with a clue as to where he will strike next.
On the following day, they find the guards unresponsive and the painting stolen. Holmes determines that Lupin disguised himself as a visiting French artist to conceal himself while Lestrade was present. Lupin has left a message indicating where he will strike next.