The Flash Season 03, Episode 23 – “Finish Line” : With nothing left to lose, Barry takes on Savitar as Season 3 ends.
The Flash S03 E22 Infantino Street : With only 24 hours left until Savitar murders Iris, Barry struggles to save the woman he loves and makes the choice to use any means necessary to do so. Realizing he has one option left to save her, the Flash turns to Captain Cold for help.
The Flash Season 03, Episode 21 – “Cause and Effect” : Barry takes drastic measures to stop Savitar. Meanwhile, H.R. continues to push Tracy Brand to design the trap for Savitar; and Killer Frost returns with an interesting proposal.
The Flash S03 E20 I Know Who You Are : Barry and the team meet Tracy Brand, a scientist who may be the key to stopping Savitar. Unfortunately, Killer Frost is also after Tracy, so Team Flash must battle their old friend, which proves to be particularly difficult for Cisco. Meanwhile, Joe and Cecile’s relationship takes a big turn.
The Flash S03 E19 The Once and Future Flash : Barry travels to 2024 to find out Savitar’s still unknown identity in the hopes of saving Iris. He encounters future versions of his Team Flash friends, who, following the death of Iris, have become very different people. Meanwhile, back in the present, the hunt for Killer Frost continues.
The Flash S03 E18 Abra Kadabra : The Flash battles Abra Kadabra, a villain from Earth-19, who offers to reveal Savitar’s true identity. Meanwhile, Julian remains cold towards Caitlin, but when she is severely injured in a battle with Gypsy, he rushes to her side.
The Flash S03 E17 Duet : A crossover episode with “Supergirl” concludes. Barry and his team are surprised when Mon-El and Hank Henshaw arrive on their Earth carrying a comatose Supergirl who was whammied by the Music Meister. Unable to wake her up, they turn to Team Flash to save her. However, the Music Meister surprises The Flash and puts him in a similar coma. Kara and Barry wake up without their powers in an alternate reality where life is like a musical and the only way to escape is by following the script.
The Flash S03 E16 Into the Speed Force : Barry, desperate to stop Savitar and save his friends, turns to the speed force for answers. Meanwhile, H.R. gives Jesse some advice.
The Flash S03 E15 The Wrath of Savitar : Wally has visions of Savitar while training with Barry, but he hides them from the team. Meanwhile, a dangerous secret threatens Barry and Iris’ happiness.
The Flash S03 E14 Attack on Central City : Grodd and his army of gorillas bring the battle to Earth-1, but the Flash and his team try to stop them before they destroy Central City. Meanwhile, Gypsy returns to join the fight; and Jesse Quick decides she wants to stay with Wally on Earth-1.