Bentley informed Sly that the Black Knight was carrying what he suspecting to be Sir Galleth's cane through town. With this being one of the only times the Black Knight would come out the castle, Bentley tasked Sly with stealing the cane. Before that, though, Sly took some pictures of the Black Knight's suit and the lock of the cane's case for Bentley to analyze.
Sly then dispatched the two mech wolves that were guarding the rear of the cane's case and Bentley remotely hacked the lock. Once it was open, Sly stole the cane and took it back to its rightful owner.
|Sly Cooper: Thieves in Time jobs|