Season 4
The mission of Barry Allen, aka The Flash, is once more to protect Central City from metahuman threats. But with Barry trapped in the Speed Force, this mission falls to his family – Detective Joe West; fiancée Iris West; and Wally West/Kid Flash – and the team at S.T.A.R. Labs: Caitlin Snow/Killer Frost, Cisco Ramon/Vibe and brilliant scientist Harrison Wells. When a powerful villain threatens to level the city unless The Flash appears, Cisco risks everything to free Barry. But this is only the first move in a deadly game with Clifford DeVoe, aka The Thinker, a mastermind who’s always ten steps ahead of Barry, no matter how fast Barry runs.
Episodes
1 The Flash Reborn Oct 10, 2017 
2 Mixed Signals Oct 17, 2017 
3 Luck Be a Lady Oct 24, 2017 
4 Elongated Journey Into Night Oct 31, 2017 
5 Girls Night Out Nov 7, 2017 
6 When Harry Met Harry... Nov 14, 2017 
7 Therefore I Am Nov 21, 2017 
8 Crisis on Earth-X (III) Nov 28, 2017 
9 Don't Run Dec 5, 2017 
10 The Trial of The Flash Jan 16, 2018 
11 The Elongated Knight Rises Jan 23, 2018 
12 Honey, I Shrunk Team Flash Jan 30, 2018 
13 True Colors Feb 6, 2018 
14 Subject 9 Feb 27, 2018 
15 Enter Flashtime Mar 6, 2018 
16 Run, Iris, Run Mar 13, 2018 
17 Null and Annoyed Apr 10, 2018 
18 Lose Yourself Apr 17, 2018 
19 Fury Rogue Apr 24, 2018 
20 Therefore She Is May 1, 2018 
21 Harry and the Harrisons May 8, 2018 
22 Think Fast May 15, 2018 
23 We Are The Flash May 22, 2018