Season 6 follows new events, with Crisis only a few weeks away. Now, Barry tries to set up a team member for Team Flash for life where he tries to catch a hideous world, and Ralph reveals the secret of the family that will change the course of events. Meanwhile, Barry and Iris are still trying to face their fate in order to deal with the tragic loss of their daughter Nora.
Too disjointed to be compelling, too in love with its own dialogue to be moving, "Marathon" is destined to finish behind the rest of the pack of this season.
