DC’S LEGENDS OF TOMORROW“Slay Anything” — (9:00-10:00 p.m. ET) (TV-14, DLV) (HDTV)SURVIVING FAMILY – When the Legends discover a new Encore, Sara (Caity Lotz), Rory (Dominic Purcell) and Ava (Jes Macallan) end up crashing a high school reunion to attempt to stop a serial killer from finishing unfinished business. The Legends devise a plan to send Nate (Nick Zano), Ray (Brandon Routh), Nora (Courtney Ford), Behrad (guest star Shayan Sobhian) and their hostage Zari (Tala Ashe), back in time to try and intervene in order to try to save everyone including them. Meanwhile, Constantine (Matt Ryan) is annoyed that Charlie (Maisie Richardson-Sellers) has been squatting in his old home, but it might be the blessing in disguise they were not looking for. Alexandra LaRoche directed the episode written by Matthew Maala & Tyron B. Carter (#503).