After this, see if you are at the Severn family's grave, and if it leads to the graves of thirteen unknown men. Past the graves, follow Captain Kidd's instructions to the letter and search under the huge stones for a box with no locks. Pete picks up a piece of pipe with the edges sealed as a weapon from the pile of stones.
After this point, check if you have reached the Severn family's cemetery and if it leads to the graves of thirteen unknown people. Follow Captain Kidd's instructions exactly and search under the large stones for an unsecured box. Pete picks up a pipe with sealed edges as a weapon from the pile of stones.