Episodes Legion: Chapter 21 Published 2 years ago on June 29, 2019 Chapter 21: David prepares for a journey. Written by Noah Hawley and Olivia Dufault & Kate Thulin; Directed by Carlos Lopez Estrada. Airdate: Monday 1 July 2019 at 10.00pm on FX. Season 3, Episode 2 Share this post: Twitter Facebook Pinterest Reddit SMS CableFXLegion Advertisement You may like The Proof Is Out There: Weeping Mary and the Montana Alien (S1EP6 History Tues 19 Jan 2021) Fixer to Fabulous: A Closed-off House Turns Character-filled Home (S2EP12 HGTV Tues 19 Jan 2021) Dead Silent: The Sinner And The Saint (S4EP12 Investigation Discovery Tues 19 Jan 2021) Prodigal Son: Speak of the Devil (S2EP2 FOX Tues 19 Jan 2021) Frontline: President Biden (S2021EP2 PBS Tues 19 Jan 2021) Supermarket Stakeout: Greek, Sweet & Open-faced Eats (S3EP4 Food Network Tues 19 Jan 2021)