Michael Christopher Knickerbocker was considered a suspect in Sessions' disappearance. While Knickerbocker was in prison serving five consecutive life sentences, he reportedly told his fellow inmates that he murdered Sessions. He also said he chained Sessions to a tree and discarded her body close to
Fort Myers in the
Caloosahatchee River, but because Knickerbocker was not living in
Gainesville at the time of Sessions' disappearance, the feasibility of his involvement has been questioned. , police believe that now-deceased and convicted serial-killer Paul Eugene Rowles was responsible for Sessions' disappearance and murder. At the time Sessions disappeared, Rowles was working for a construction-related company near the path where she was last seen. Rowles did not show up for work on the day Sessions went missing. Rowles had kept an address book with information on people he murdered (discovered by investigators in January 2013 following interviews with Rowles; he died a month later). The book listed Linda Fida, a known victim, as the first woman he killed; it may also contain a cryptic reference to Elizabeth Foster (another known victim whose body was found about one mile from where Sessions disappeared). Notably the book contained a notation "#2 2/9/89 #2", believed by investigators to refer to Sessions' date of disappearance, and to identify her as Rowles' second victim. Sessions has been excluded from 150
unidentified decedents in the United States. == Finding Tiffany Sessions projects and aftermath ==