Gone At 21: Katelyn Markham's Death Investigation. Katelyn Markham was a 21 year old college student who vanished from her Fairfield, Ohio townhouse on August 13, 2011. Katelyn's remains were found Twenty (20) months later in Cedar Grove, Indiana in an illegal wooded dump site. Katelyn was thrown out like trash. I am the Private Investigator, J. Ryan Green, hired to investigate this case. This is my investigation into the disappearance and death of Katelyn Markham.