This is a short chapter consisting of little more than running around like a madman. Somehow you've blacked out and lost track of time, so you're frantically searching for your son. You start the chapter standing in the middle of the road in front of an oncoming truck, so hit the quicktime button to perform a better dodge. You can run any way you like down the deserted streets, and you'll end up back at the park. When you enter the park you can look around and even check out Shaun's backpack he left by the carousel, but you can move on at any time by leaving through one of the exits back out to the street.
Next you'll be at your house. Like the park, you can roam around the rooms on the bottom floor or check out back, but once you head upstairs, it goes to a cut scene and the chapter ends.