Here’s the extended trailer for next week’s episode of The Flash, titled “Think Fast”. It’s the second-last episode of the season.

And here’s the official synopsis for the episode.

“Think Fast”— (8:00-9:00 p.m. ET)
DAVID RAMSEY GUEST STARS — When DeVoe assaults an A.R.G.U.S. facility to complete his Enlightenment Machine, Barry (Grant Gustin) realizes the only way he can stop him is if he allows Cisco (Carlos Valdes) and Caitlin (Danielle Panabaker) to accompany him into the facility. Still shaken by Ralph’s death, Barry isn’t sure he wants to risk any more of his friends’ lives and considers taking on DeVoe solo. Viet Nguyen directed the episode written by Sam Chalsen & Kristen Kim (#422). Original airdate 5/15/2018.

Here’s the extended trailer for next week’s episode of The Flash, titled “Harry And The Harrisons”. There are only three episodes left this season, including this one.

And here’s the official synopsis for the episode.

“Harry and The Harrisons”
THE TEAM TURNS TO AMUNET BLACK FOR HELP — With DeVoe’s Enlightenment device nearly complete, in order to disable it The Flash (Grant Gustin) and his team must put their faith in an unlikely ally – Amunet Black (guest star Katee Sackhoff). Meanwhile, Harry (Tom Cavanagh) hits an all-time low when the “Council of Wells” kicks him out but then Cisco (Carlos Valdes) introduces him to the “Council of Harrisons.” Kevin Mock directed the episode written by Judalina Neira & Lauren Certo (#421). Original airdate 5/8/2018.

Here’s the extended trailer for next week’s episode of The Flash, titled “Therefore She Is”. In it, the Thinker gets closer to fulfilling his master plan.

And this is the official synopsis for the episode.

“Therefore She Is” – (8:00-9:00 p.m. ET) (TV-PG, V) (HDTV)
GYPSY RETURNS – Barry (Grant Gustin) and Team Flash team up with Gypsy (guest star Jessica Camacho) to try to thwart Thinker’s plan. Meanwhile, Cisco (Carlos Valdes) and Gypsy have a heart to heart talk about their relationship. Rob J. Greenlea directed the episode written by Sterling Gates & Thomas Pound (#420). Original airdate 5/1/2018.

Here’s the extended trailer for next week’s episode of The Flash, titled “Fury Rogue”.

And here’s the official synopsis for the episode. It’s apparently going to be Wentworth Miller’s last appearance in the CWverse, at least as things stand now, but hopefully he’ll appear again sometime in the future.

“Fury Rogue”
WENTWORTH MILLER RETURNS AS CITIZEN COLD — When Barry (Grant Gustin) needs help transporting a dangerous meta, he calls on a new friend for help – Leo Snart AKA Citizen Cold (guest star Wentworth Miller). Meanwhile, Cisco (Carlos Valdes) becomes suspicious of Harry (Tom Cavanagh). Rachel Talalay directed the episode written by Jeff Hersh & Joshua V. Gilbert (#419). Original airdate 4/24/2018.

Looking forward to seeing Citizen Cold again, as well as Miller’s swan song? Share your thoughts here!

Here’s the extended trailer for next week’s episode of The Flash, titled “Lose Yourself”, which features a conflict with the Thinker. It’s the eighteenth episode of the season, so there aren’t many left.

And this is the official synopsis for the episode, which should tell you more about it.

“Lose Yourself”- (8:00-9:00 p.m. ET)
RALPH CONSIDERS CROSSING A LINE TO DEFEAT THE THINKER — When Barry (Grant Gustin) and Team Flash find a way to enter The Thinker’s lair, Ralph (guest star Hartley Sawyer) considers crossing a dangerous line to defeat DeVoe. Meanwhile, Joe (Jesse L. Martin) is concerned by Harry’s (Tom Cavanagh) recent behavior. Hanelle Culpepper directed the episode written by Jonathan Butler & Gabriel Garza (#418). Original airdate 4/17/2018.