The Box of Secrets is a shop in Knothole Island, Fable II's first DLC. This shop functions differently than most in the way that money is not used, but rather various items like Necklaces are traded in exchange for secret items. The shop also purveys such unique items as the Wretcher's Blade, the Judge's Steel, and Hal's Rifle, which is in fact a replica of the assault rifle featured in the Halo series of video games. Acquiring all the items in the shop will unlock the achievement The Collector.