Underneath

"Underneath" is the upcoming twentieth episode of the fifth season of Arrow, and the one-hundred-and-twelfth episode overall. It will air on May 3, 2017.

Synopsis
Things get intense when Oliver and Felicity are trapped in the bunker together. Meanwhile, Lyla and Diggle deal with their martial issues.

Production
Preparation ran from February 23 until March 3, 2017. Shooting ran from March 6 until March 15, 2017.