India, Feb. 12 -- The surveillance photos and videos released by the FBI in the Nancy Guthrie case could reportedly reveal a trove of information that investigators can use to identify the potential subject. The FBI is offering a $50,000 reward for information leading to the recovery of Nancy and/or the arrest of those responsible for her disappearance.

The black-and-white photos and clips show a person wearing gloves, a mask, khakis, sneakers and a backpack, appearing to tamper with the camera at Guthrie's front door on the morning she went missing. One of the videos shows the person walking up to the door with their head down. The individual's eyes are visible through holes in their mask.

According to various law enforcement experts, ...