Arrow — ” Genesis” — Image AR420a_0001b.jpg — Pictured: David Ramsey as John Diggle — Photo: Diyah Pera/The CW — © 2016 The CW Network, LLC. All Rights Reserved.

Arrow — ” Genesis” — Image AR420a_0074b.jpg — Pictured (L-R): Eugene Byrd as Andy Diggle and David Ramsey as John Diggle — Photo: Diyah Pera/The CW — © 2016 The CW Network, LLC. All Rights Reserved.

Arrow — ” Genesis” — Image AR420a_0077b.jpg — Pictured (L-R): Eugene Byrd as Andy Diggle and David Ramsey as John Diggle — Photo: Diyah Pera/The CW — © 2016 The CW Network, LLC. All Rights Reserved.

Arrow — ” Genesis” — Image AR420a_0124b.jpg — Pictured: Eugene Byrd as Andy Diggle — Photo: Diyah Pera/The CW — © 2016 The CW Network, LLC. All Rights Reserved.

Arrow — ” Genesis” — Image AR420a_0224b.jpg — Pictured (L-R): David Ramsey as John Diggle and Eugene Byrd as Andy Diggle — Photo: Diyah Pera/The CW — © 2016 The CW Network, LLC. All Rights Reserved.

Arrow — ” Genesis” — Image AR420a_0261b.jpg — Pictured: Eugene Byrd as Andy Diggle — Photo: Diyah Pera/The CW — © 2016 The CW Network, LLC. All Rights Reserved.

Arrow — ” Genesis” — Image AR420a_0319b.jpg — Pictured (L-R): Eugene Byrd as Andy Diggle and David Ramsey as John Diggle — Photo: Diyah Pera/The CW — © 2016 The CW Network, LLC. All Rights Reserved.

Arrow — “Genesis” — Image AR420a_0338b.jpg — Pictured: David Ramsey as John Diggle — Photo: Diyah Pera/The CW — © 2016 The CW Network, LLC. All Rights Reserved.

Arrow — “Genesis” — Image AR420a_0341b.jpg — Pictured: Neal McDonough as Damien Darhk — Photo: Diyah Pera/The CW — © 2016 The CW Network, LLC. All Rights Reserved.

Arrow — “Genesis” — Image AR420a_0407b.jpg — Pictured (L-R): Eugene Byrd as Andy Diggle and Neal McDonough as Damien Darhk — Photo: Diyah Pera/The CW — © 2016 The CW Network, LLC. All Rights Reserved.

Arrow — “Genesis” — Image AR420a_0418b.jpg — Pictured: David Ramsey as John Diggle — Photo: Diyah Pera/The CW — © 2016 The CW Network, LLC. All Rights Reserved.

Arrow — “Genesis” — Image AR420b_0040b.jpg — Pictured (L-R): Gabriella Wright as Esrin Fortuna and Stephen Amell as Oliver Queen — Photo: Diyah Pera/The CW — © 2016 The CW Network, LLC. All Rights Reserved.

Arrow — “Genesis” — Image AR420b_0080b.jpg — Pictured (L-R): Gabriella Wright as Esrin Fortuna, Stephen Amell as Oliver Queen and Emily Bett Rickards as Felicity Smoak — Photo: Diyah Pera/The CW — © 2016 The CW Network, LLC. All Rights Reserved.

Arrow — “Genesis” — Image AR420b_0083b.jpg — Pictured (L-R): Gabriella Wright as Esrin Fortuna, Emily Bett Rickards as Felicity Smoak and Stephen Amell as Oliver Queen — Photo: Diyah Pera/The CW — © 2016 The CW Network, LLC. All Rights Reserved.

Arrow — “Genesis” — Image AR420b_0099b.jpg — Pictured: Gabriella Wright as Esrin Fortuna — Photo: Diyah Pera/The CW — © 2016 The CW Network, LLC. All Rights Reserved.

Arrow — “Genesis” — Image AR420b_0133b.jpg — Pictured: Stephen Amell as Oliver Queen — Photo: Diyah Pera/The CW — © 2016 The CW Network, LLC. All Rights Reserved.

Arrow — “Genesis” — Image AR420b_0136b.jpg — Pictured: Emily Bett Rickards as Felicity Smoak — Photo: Diyah Pera/The CW — © 2016 The CW Network, LLC. All Rights Reserved.

Episode 20 Official Synopsis:

“Genesis” — (8:00-9:00 p.m. ET) (TV-14, LV) (HDTV) 

DIGGLE IS CONSUMED WITH GUILT AND SEEKS REVENGE – As Oliver (Stephen Amell) and Felicity (Emily Bett Rickards) look for a magical solution to defeat Darhk (guest star Neal McDonough), a vengeance-driven Diggle (David Ramsey) gets a lead on Andy’s (guest star Eugene Byrd) whereabouts and heads off to confront his brother. Meanwhile, Alex (guest star Parker Young) takes Thea (Willa Holland) on a vacation that quickly turns into a nightmare. Gregory Smith directed the episode written by Oscar Balderrama & Emilio Ortega Aldrich (#420). Original airdate 5/4/2016.