Hats with Headlights is the third book in the Grampa Hal series. Grampa comes to visit Mama and Little Davey and brings some very curious things. Davey becomes scared when Grampa tells him that they will go crawling in the night, searching for other things that will be crawling with them. Grampa takes Mama and Little Davey to two special places to teach them about God's amazing creation of creatures that live in the water. After crawling in the night with Grampa, Davey receives some shocking news that turns his little world upside down and causes him to enter into a deep sadness. Come on, let's get going over to Maplewood Avenue for another special adventure with Grampa, Mama, and Little Davey Gibson.