Ethan and Kate try to get the surviving townspeople to safety after David decides to start over again with Group C. Meanwhile, Pam tries to oppose her brother's plans, and Theresa and Ben try to get Amy to safety.moreless
When Ethan takes the subversives into custody rather than Reckon them, members of the First Generation launch an attack on the sheriff's station. Meanwhile, Theresa receives unexpected assistant breaking into Plot 33, and Megan pays Ben a visit at the hospital.moreless
While Ben and Amy are taken to the hospital, Ethan seeks out the terrorists who put them there. Meanwhile, David orders Pam to question the surveillance techs when he believes that the subversives have support from inside the complex.moreless
Sam has Castiel convince Crowley to find the three ingredients for the spell necessary to cure Dean of the Mark. Meanwhile, Dean continues to sink deeper under the Mark's influence, and contacts a former ally for help.moreless
Barry and the others manage to access Cisco's visions and try to recreate the conditions where Harrison confessed to Nora's murder in the original timeline. Meanwhile, Eddie asks a favor of Joe but is surprised at his partner's refusal.moreless
The killer: Tom, a high school student; the victim: Glen Martin, a popular singing science teacher at Tom's high school.
Tom, a quiet student, enjoys being invisible so that he can engage in his favorite activity of creeping; breaking into people's homes just for the fun of it.
When several people kill themselves under strange circumstances, Sam and Dean discover that they were driven insane by the Goddess of Truth, who forced them to tell the truth against their will. However, when the brothers track down the goddess, Veritas, she uses her powers on Dean.moreless
A man named Sylvester asks Chloe for help but ends up getting attacked and killed. Clark is led to the former headquarters of the Justice Society of America where he meets up with Dr. Fate, Hawkman, and Stargirl. Later, Clark, John Jones, Green Arrow, and Chloe team up to help the JSA stop the killer before he murders someone else in the group. Meanwhile, Lois receives a package from a mysterious agency called Checkmate.moreless
Shawn is shocked when he learns that Gus is married after Gus' wife unexpectedly shows up. She asks the men to take on a missing-persons case.