The Best Episodes Written By Sterling Gates

When a nuclear bomb detonates in downtown Central City, Barry, Jesse Quick and Jay Garrick slow down time by entering Flashtime. As everyone in the city is frozen, the three speedsters push themselves to the breaking point to save the city and everyone in it.

Cisco is shocked when Gypsy's father, Breacher, shows up on Earth-1. Breacher takes an immediate disliking to Cisco and decides to hunt him. Meanwhile, Barry runs into his old nemesis, Ralph Dibny.

Pariah enlists Black Lightning to help stop the Anti-Monitor after Flash-90 shares what he learned from his battle in ‘Elseworlds.’ With the help of Black Lightning, Barry, Cisco and Killer Frost come up with a plan that could save them all. Meanwhile, Iris has a heart-to-heart with Ryan Choi, while Oliver and Diggle return to an old familiar stomping ground. The crossover starts on Supergirl S05E09 and Batwoman S01E09. It continues on Arrow S08E08 and Legends of Tomorrow S05E01.

When a familiar villain returns to terrorize Central City, Ralph must rise up to defend the innocent while Barry is detained by his trial. Meanwhile, Barry searches for the strength to keep his optimism alive in the face of his new circumstances.

When Mr. Mxyzptlk, a magical imp, shows up on Earth and declares his love for Kara, she tries to let him down easy, thinking him harmless. However, he decides it’s a challenge and starts to wreak havoc on National City. Mon-El has seen beings like Mr. Mxyzptlk on Daxam and knows how dangerous they can be. He and Kara argue over how to get rid of Mr. Mxyzptlk, further straining their relationship. Meanwhile, Alex and Maggie celebrate their first Valentine’s Day together.

Barry and Team Flash team up with Gypsy to try to thwart Thinker's plan. Meanwhile, Cisco and Gypsy have a heart to heart talk about their relationship.

Team Flash finds out that a suburban mom named Vickie Bolen is in danger and they race to save her. Upon meeting her, they discover she’s a meta-human who is hiding her abilities from her family. Barry encourages Vickie to share her secret with her family, which makes Nora realize she needs to come clean with her parents about Thawne.

Barry's efforts to prepare Cisco for Crisis are derailed when Cisco schemes to save Barry's life instead. Meanwhile, Ramsey Rosso uses his deadly new abilities to save his own life, while sacrificing his humanity in the process.

The Flash takes on a dangerous new meta named Sunshine. Cisco sets out to help Nash.

While Nora grapples with the revelation that Thawne killed her grandmother, Team Flash must stop the formidable team-up of a newly sprung from jail Weather Witch and Silver Ghost, a new meta-tech villain who can control engines and motorized technology. Meanwhile, Caitlin and Cisco discuss creating a meta-human cure.

Nora lets something slip about the future that devastates Iris. In an attempt to distract his wife, Barry asks Iris to team up to stop a new meta, Rag Doll. Meanwhile, Caitlin learns something about her father.

Horizon High throws a dance in honor of Harry being exonerated, but Norman asks Harry to stay at the Oz Academy.