Season 4 (Arrow)

Arrow was renewed for a fourth season on January 11, 2015. It will begin airing October 7, 2015 and will air during the 2015-2016 TV season.

Official synopsis
''After defeating his most formidable foe to date and riding off into the sunset with longtime flame Felicity Smoak, Oliver Queen (a.k.a. The Arrow) left Starling City with the hopes of beginning a new life. But will Oliver ever truly be able to leave behind his past as the Arrow, and, if so, what becomes of the team he has worked so hard to assemble? Will Diggle, Thea, and Laurel be left to continue Oliver’s crusade without him? And with Malcolm Merlyn having ascended to the top of the League of Assassins as the new Ra's al Ghul, is anyone really safe?''

Main cast

 * Stephen Amell as Oliver Queen
 * Katie Cassidy as Laurel Lance
 * David Ramsey as John Diggle
 * Emily Bett Rickards as Felicity Smoak
 * Willa Holland as Thea Queen
 * John Barrowman as Malcolm Merlyn
 * Neal McDonough as Damien Darhk

Recurring cast

 * Brandon Routh as Ray Palmer/The Atom

Confirmed plot points

 * There will be a crossover with The Flash ' s second season sometime in fall to winter.
 * Felicity Smoak will return in some capacity.
 * The season's main antagonist will be Damien Darhk, introduced in the third season finale.
 * The season will follow a lighter tone to that of season 3.
 * Stephen Amell claims that he will not wear the Arrow suit again.

New characters

 * Patty: A mayoral candidate who is deeply committed to her city and willing to risk her life to stand up for the people. Described as a female in her 50s-early 60s, Patty is a peer and an old friend of the late Moira Queen, and was once close with Oliver and Thea. She is also a mother, and cares for her daughter above all else.