Arrow: Oliver and Felicity Are Trapped Together in "Underneath"

The CW has released the official synopsis for "Underneath," the 20th episode of Arrow season 5.

"Underneath" is the episode many fans have been waiting for: with the two groups paired off, audiences will get to see some insights into the relationships that Oliver and Felicity have, and also Diggle and his wife Lyla.

You can check it out below.

Things get intense when Oliver (Stephen Amell) and Felicity (Emily Bett Rickards) are trapped in the bunker together. Meanwhile, Lyla (guest star Audrey Marie Andreson) and Diggle (David Ramsey) deal with their martial issues.

Wendey Stanzler directed the episode written by Wendy Mericle & Beth Schwartz.

More Arrow news:

• Two Team Arrow Members Upgraded to Series Regular For Season Six
• Arrow Star Talks Possible Black Canary, Black Siren Showdown
• Manu Bennett's Deathstroke Will Return To Arrow, Despite Actor's Denials
• Arrow: Is Captain Boomerang Returning In The Season 5 Finale?

Arrow airs Wednesday nights at 8 p.m. ET/PT on The CW. "Underneath" will debut on May 3.