Gone At 21: Katelyn Markham's Death Investigation. This show outlines the death investigation of a 21 year old college student, Katelyn Markham, who disappeared from her Fairfield, Ohio home on August 13, 2011. Katelyn's remains were found Twenty months later in Cedar Grove, Indiana. This podcast is from the notes of the Private Investigator, J. Ryan Green, who was hired to investigate the case.