Where's the key to Stoneridge Watch? ('Old Friends' quest)

I need a key to enter Stoneridge Watch for the 'Old Friends' quest. I've killed every bandit outside and searched them but haven't been able to find the key.

Does anyone know where it is?

3

1 Answer

The key is inside Stoneridge Watch. To get inside you need to enter through a trapdoor that is in the back left tower as you enter the courtyard.