ION Mystery A human skeleton is found in the trenches of a Civil War battleground; Booth's brother returns from his trip with surprising news. 2026-08-13 Brennan and Booth investigate a set of uniquely disfigured remains allegorizing biblical text; a Jeffersonian intern reveals a secret about his past. 2026-08-13 Dr. Sweets deals with post-traumatic stress after his subway train is derailed by flood water; a partially skeletonized body is discovered. 2026-08-13 Recounting the events of the first case on which Brennan and Booth worked together; how other Jeffersonian team members' relationships began. 2026-08-13 Brennan returns to her former high school to investigate when unidentified human remains are discovered; Booth and Brennan pose as a married couple at her high school reunion. 2026-08-13 Brennan and Booth are asked to identify human remains found inside the belly of a shark; a marine biologist (Rena Sofer) is interested in Booth. 2026-08-14