In the story Duffy's Jacket Duffy, Marie, and Andrew are being dragged along to a camping trip by there mothers.
When they arrive they are surprised to find out that it is actually really nice. It is just a little dirty. So they decided to clean it up a little.
The next day the family was taking a look around the house. Then, they found writing on the wall that said, "BEWARE THE SENTINEL."
You Forgot you jacket stupid.
Then Andrews mom decided that they were all going to go on a walk. While on the walk Duffy forgot his jacket in the forest.When the entire family had gotten back from there walk they decided to do a little more cleaning. That's when they realized that duffy forgot his jacket in the forest.
Then, both Duffy and Andrews mom left to go get some needed materials, like light bulbs. While their parents were gone they heard scrathing at the door and they were afraid that is could be the sentinel. they ran out side to hide in teh barn, but it was locked and they heard the creature coming. they ran back inside the house and went up stairs to hide.
While they are upstairs they hear the creature following them. They hear crashing down stairs. Then they hear him coming upstairs and they are just waiting for him to come upstairs. They locked the door but it is no chance for the creature walks in and says, "You forgot your jacket stupid."