Kieran is a new kid in Lakewood, after losing his mother and his stepfather in a car accident before the series, and grows a special bond with Emma in the first season. He was suspected of being the killer but no evidence was found against him. In the first-season finale, Kieran's father, Clark Hudson, is killed through disembowelment. Kieran's cousin Eli and aunt Tina arrive after he is found living without an adult. In the second season, Kieran is eventually revealed to be Piper's accomplice in the killings. His motive is explained as he and Piper were in a relationship and started a murder spree as revenge against their parents (Piper for being put up for adoption while her half-sister, Emma had the life Piper should have had and Kieran for his dad dumping him in Atlanta with his mom to get high on pills). He continued to frame both Emma and Audrey for the murders to avenge Piper. He is ultimately arrested and sentenced to life in prison; however, he is murdered by the new killer in the second-season Halloween special episodes.
