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.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. "Search body for clues" may not check off after searching Northy's body leaving the player character with a quest blip over his body. After I killed Northy I checked his body for clues and listened to the tape. The first part of the quest requires tracking down clues to find a hidden VaultTec bunker. Here's where to find the Fallout 4 Speak of the Devil password and complete the mission so you can pick up your own set of X02 power armor. Almost finished the silver shroud quest but I still get the search body for clues message. The first mission will be to kill Wayne Delancy, a murderer who you can find in one of the alleys within Goodneighbor.