Stealing Plans

Background
This is one of the Silver Hand Campaign quests given by Aela the Huntress. She says that a Silver Hand lieutenant who has been snooping around Whiterun is camped at one of a number of locations (see below). She tasks the Dragonborn to steal their plans so that the location of their chief hideout can be discovered.

Walkthrough

 * Go to the appointed location
 * Kill the Silver Hand lieutenant
 * Retrieve the Silver Hand Stratagem
 * Return to Aela for a sum of 100-300

Known locations

 * Fort Fellhammer
 * Redoran's Retreat
 * Faldar's Tooth
 * Orotheim
 * Swindler's Den
 * Treva's Watch
 * Lost Knife Hideout
 * Broken Helm Hollow
 * Glenmoril Coven
 * Valtheim Towers

Bugs

 * If the quest is at Broken Helm, and the cave is already cleared, crashes.
 * If the quest is at Oratheim cave, and the cave is already cleared, crashes.
 * If the quest is at Redoran's Retreat, and the cave is already cleared, may crash.
 * If this quest is at the Swindler's den, and the cave is already cleared, it may crash.
 * Patch 1.4 resolved this issue.
 * If quest is at Swindler's Den, and the cave has already been cleared, will crash on loading screen.
 * The console command to skip this part of the quest is.
 * If this quest is at the Treva's Watch and the cave is already cleared, it may crash.
 * In some instances this quest is given again by Aela after already completing it once, rendering it uncompletable since she already has the plans. When asking for work, other Companions may or may not inform the player they are doing something for Aela, or sometimes they may actually give an additional quest. On PC the setstage console command does not work to fix this problem.
 * If quest is at Faldar's Tooth, the quest marker will not show up and the Silver Hand Stratagem will not be there.
 * If your game is bugged and you are just doing this to marry Aela just do the Aelas side quests till you become The Companian leader then you can marry her.