After you kill Northy, or more accurately, he seems to kill himself, you're supposed to check the body for clues. With the Silver Shroud missions you have to toss a calling card onto the character's body after you kill them to register as complete.The Silver Shroud is a side quest in Fallout 4. Contents. I've killed Northy in the silver shroud quest and must search the body. There is a marker on a pile of rubble, but I don't see any way to get under. After I killed Northy I checked his body for clues and listened to the tape. Almost finished the silver shroud quest but I still get the search body for clues message. Use VATS to take him out. Be sure to leave calling cards on both of their corpses. Residents remember Underground Railroad stops in the Bronx.