Surveillance skills

Exploration Stage: Burned-out Estate
From: Harper McGill
Description: But the real fire wasn't my fault. I'll explain everything to prove it. I needed to figure out what was going on in the house. It took a long time, but I found a way to bug the house. Remember the chamomile infusion jar, Eli? Bring it to me if it's still burning.
Completed: Look at this! You see the snail shells hiding among the chamomile stems? There's a bug in it! I pretended to be a flower seller and sold this jar to your housekeeper. I knew you well enough to know that the doctor prescribed an infusion of fresh chamomile.