Grave Thieves is a deep web website
Grave Thieves is a website that can appear on one of three deep wiki pages. Grave Thieves is, as you can tell from the title, a site where grave robbers recruit people into their groups so they can rob graves of valuables like money or other expensive items.
A code can appear on this site normally somewhere on the picture or listed things to collect. Grave Thieves also have a question on The Gatekeeper. The question is,"What item is not listed on Grave Thieves?" The answer is Coins.