Katelyn Rivera-Helton was one year old when she was last seen on August 10, 1999, in Boothwyn, Pennsylvania. At the time she was described as a toddler with blonde hair and brown eyes, about 2 feet 6 inches tall and 23 pounds, with a birthmark on her back near the left shoulder blade. When last seen she wore a yellow top, yellow shorts, yellow socks and white sneakers.

Katelyn was last known to be in the care of her father, Robert Rivera, amid an active custody dispute following the mother’s recent separation and assault charges against him. On the morning she disappeared Rivera attended a court hearing related to those charges; later that day an altercation occurred in a store parking lot and Rivera went to the babysitter’s home and took Katelyn. A gas station employee saw Katelyn in Rivera’s car that evening, but when he returned to the same gas station a couple of hours later Katelyn was not with him. Rivera gave inconsistent accounts of her whereabouts and searches turned up no sign of the child.

Katelyn remains missing and her whereabouts are unknown. Did anyone in Boothwyn in August 1999 see Katelyn or notice Rivera’s vehicle that evening?