Arrow — “Brotherhood” — Image AR407A_0036b.jpg — Pictured (L-R): Stephen Amell as Oliver Queen and Emily Bett Rickards as Felicity Smoak — Photo: Dean Buscher/The CW — © 2015 The CW Network, LLC. All Rights Reserved.

Arrow — “Brotherhood” — Image AR407A_0065b.jpg — Pictured: David Ramsey as John Diggle — Photo: Dean Buscher/The CW — © 2015 The CW Network, LLC. All Rights Reserved.

Arrow — “Brotherhood” — Image AR407A_0084b.jpg — Pictured (L-R): David Ramsey as John Diggle and Stephen Amell as Oliver Queen — Photo: Dean Buscher/The CW — © 2015 The CW Network, LLC. All Rights Reserved.

Arrow — “Brotherhood” — Image AR407A_0142b.jpg — Pictured (L-R): Emily Bett Rickards as Felicity Smoak and Brandon Routh as Ray Palmer — Photo: Dean Buscher/The CW — © 2015 The CW Network, LLC. All Rights Reserved.

Arrow — “Brotherhood” — Image AR407A_0263b.jpg — Pictured: Emily Bett Rickards as Felicity Smoak — Photo: Dean Buscher/The CW — © 2015 The CW Network, LLC. All Rights Reserved.

Arrow — “Brotherhood” — Image AR407A_0290b.jpg — Pictured (L-R): Brandon Routh as Ray Palmer and Emily Bett Rickards as Felicity Smoak — Photo: Dean Buscher/The CW — © 2015 The CW Network, LLC. All Rights Reserved.

Arrow — “Brotherhood” — Image AR407A_0319b.jpg — Pictured (L-R): Brandon Routh as Ray Palmer and Emily Bett Rickards as Felicity Smoak — Photo: Dean Buscher/The CW — © 2015 The CW Network, LLC. All Rights Reserved

Arrow — “Brotherhood” — Image AR407A_0336b.jpg — Pictured (L-R): Brandon Routh as Ray Palmer — Photo: Dean Buscher/The CW — © 2015 The CW Network, LLC. All Rights Reserved.

Arrow — “Brotherhood” — Image AR407B_016b.jpg — Pictured: Stephen Amell as Oliver Queen — Photo: Cate Cameron/The CW — © 2015 The CW Network, LLC. All Rights Reserved.

Arrow — “Brotherhood” — Image AR407B_072b.jpg — Pictured (L-R): Stephen Amell as Oliver Queen and Emily Bett Rickards as Felicity Smoak — Photo: Cate Cameron/The CW — © 2015 The CW Network, LLC. All Rights Reserved.

Arrow — “Brotherhood” — Image AR407B_087b.jpg — Pictured (L-R): Parker Young as Alex Davis and Willa Holland as Thea Queen — Photo: Cate Cameron/The CW — © 2015 The CW Network, LLC. All Rights Reserved.

Arrow — “Brotherhood” — Image AR407B_106b.jpg — Pictured (L-R): Stephen Amell as Oliver Queen and Paul Blackthorne as Detective Quentin Lance — Photo: Cate Cameron/The CW — © 2015 The CW Network, LLC. All Rights Reserved.

Arrow — “Brotherhood” — Image AR407B_120b.jpg — Pictured: Stephen Amell as Oliver Queen — Photo: Cate Cameron/The CW — © 2015 The CW Network, LLC. All Rights Reserved.

Arrow — “Brotherhood” — Image AR407B_136b.jpg — Pictured: Stephen Amell as Oliver Queen and Paul Blackthorne as Detective Quentin Lance — Photo: Cate Cameron/The CW — © 2015 The CW Network, LLC. All Rights Reserved.

Arrow — “Brotherhood” — Image AR407B_172b.jpg — Pictured: David Ramsey as John Diggle and Katie Cassidy as Laurel Lance — Photo: Cate Cameron/The CW — © 2015 The CW Network, LLC. All Rights Reserved.

Arrow — “Brotherhood” — Image AR407B_207b.jpg — Pictured: Emily Bett Rickards as Felicity Smoak — Photo: Cate Cameron/The CW — © 2015 The CW Network, LLC. All Rights Reserved.

Arrow — “Brotherhood” — Image AR407B_224b.jpg — Pictured: Parker Young as Alex Davis and Willa Holland as Thea Queen — Photo: Cate Cameron/The CW — © 2015 The CW Network, LLC. All Rights Reserved.

Arrow — “Brotherhood” — Image AR407B_244b.jpg — Pictured: Neal McDonough as Damien Darhk and Stephen Amell as Oliver Queen — Photo: Cate Cameron/The CW — © 2015 The CW Network, LLC. All Rights Reserved.

Arrow — “Brotherhood” — Image AR407B_275b.jpg — Pictured (L-R): Stephen Amell as Oliver Queen and Neal McDonough as Damien Darhk — Photo: Cate Cameron/The CW — © 2015 The CW Network, LLC. All Rights Reserved.

Official Synopsis:

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

JAMES BAMFORD DIRECTS — Team Green Arrow’s ongoing battle with Damien Darhk (Neal McDonough) is complicated by a shocking revelation. Thea’s (Willa Holland) bloodlust returns and she loses control in front of Alex (guest star Parker Young). James Bamford directed the episode written by Speed Weed & Keto Shimizu (#407). Original airdate 11/18/2015.