I had a similar problem. My players were intercepted by Grump on the way back from the Sanatorium, but they were too cautious to go at night, saying they needed to check in with with the Sheriff. So with a bit of quick thinking, i said a massive storm rolled in over the night, and when they woke, it was dark, overcast, and raining like no ones business. So even though it wasn't at night, it was still dark, they had to get close to the scarecrows to see if they were real or not, and it would have been awesome for the Misgivings, but my players when into the well first...go figure...