Rory Dinsmore (d. 21 Oct 2009) is the son of Shelley and Alden Dinsmore, the younger brother of Ollie Dinsmore, and a resident of Chester's Mill, Maine. He is highly intelligent.
On Dome Day, he was present at the crash site on Route 119. The next day, he was instructed not to attend either Joe McClatchey's protest or Lester Coggins' prayer-group being held in the field of the Dinsmore Farm, and was given chores to do instead. After finishing his chores, it occurred to him to use his father's .30-.30 Winchester Elite XP3 to fire a hole through the Dome.
When he attempted to do so, however, the slug rebounded off the barrier, splitting in two and blinding him. He was rushed to Catherine Russell Hospital, where Dr. Haskell operated on him. Rory died on the table, and was pronounced dead at 5:15pm on 21 October 2009.