The CW has released the official synopsis for the episode coming up on April 21st. Details and spoilers behind the jump.
“Who is Harrison Wells?” — (8:00-9:00 p.m. ET) (TV-PG, V) (HDTV)
JOE AND CISCO TRAVEL TO STARLING CITY FOR ANSWERS ABOUT DR. WELLS — Joe (Jesse L. Martin) and Cisco (Carlos Valdes) head to Starling City to continue their investigation of Dr. Wells (Tom Cavanagh). While in town, the duo enlists the help of Captain Lance (guest star Paul Blackthorne), and Cisco meets the Black Canary (guest star Katie Cassidy), who asks him for a favor. Meanwhile, back in Central City, Barry (Grant Gustin) races to catch a meta-human named Hannibal Bates (guest star Martin Novotny) who can transform himself into every person he touches – which includes Eddie (Rick Cosnett), Iris (Candice Patton), Caitlin (Danielle Panabaker) and even The Flash. Wendey Stanzler directed the episode written by Ray Utarnachitt & Cortney Norris (#119). Original airdate 4/21/2015
And from Flashfans.org, the final list of upcoming episode titles and air dates.
1×18 – “All-Star Team-Up” – air date: April 14th
1×19 – “Who Is Harrison Wells?” – air date: April 21st
1×20 – “The Trap” – air date: April 28th
1×21 – “Grodd Lives” – air date: May 5th
1×22 – “Rogue Air” – air date: May 12th
1×23 – “Fast Enough” – air date: May 19th (season finale)
Lots of cool stuff coming our way! Once this one-week hiatus is over, we’ll be getting all six episodes straight until the end.