Original sentence: In 2011, Zak Bagans narrated and hosted a Travel Channel special called "Ultimate Travel: Legends of the Park," a show about legendary hauntings of America's National Parks.It focuses on changes to people's lives after the Ghost Adventures crew visit their locations
Edited sentence: In 2011, Zak Bagans narrated and hosted a Travel Channel special called "Ultimate Travel: Legends of the Park," a show about America's National Parks and how they are haunted.It focuses on the life changes of people affected at haunted places before and after the Ghost Adventures crew's visit to some locations