You were informed about the corrupt Lord Weston having a secret love affair with Lady Barron, whose husband recently died in suspicious circumstances. Most likely the couple had something to do with the death of Lord Barron, a loved and well-respected man. Lord Weston has given the Lady some very expensive jewelry, but she keeps them at a secret hiding place as long as there's still some commotion about the death of Lord Barron. Only when things are back to normal, she can afford to be seen in public with Lord Weston and show her precious jewels. So this is the right time to relieve the widow of her treasures, and while you're looking for secret hiding places, loot the place as well. Also, try to find some evidence against the Lady and her secret lover.