On Arrow Season 4 Episode 23, the Green Arrow teams up with a surprising source to stop Damien Darhk from destroying the world with nuclear bombs.

On Arrow Season 4 Episode 22, Oliver and Diggle race to rescue Thea from the dome, while Felicity, Curtis, and Noah work to stop Damen Darhk

On Arrow Season 4 Episode 21, Felicity seeks help from her father to try to stop Damien Darhk from destroying the world with nuclear missles.

An Arrow Season 4 Episode 20, Oliver and Felicity look for a magical solution to defeat Darhk, while Diggle pursues Andy to exact revenge for Laurel’s murder.

On Arrow Season 4 Episode 19, the team deals with the aftermath of Laurel’s death while a copycat Black Canary wreaks a bit of havoc on Star City.

On Arrow Season 4 Episode 18, “Eleven-Fifty-Nine,” Oliver and Diggle learn Malcolm might try to break Darhk out of prison, and Laurel gets a surprising offer.

Felicity, Donna and Thea are in trouble at Palmer Tech when Brie Larvan wants what Felicity has, and when Oliver gets wind of it, he calls on a surprising ally to help.

On Arrow Season 4 Episode 16, Cupid returns to Star City to kill anyone in love and Felicity and Oliver pose as potential victims to lure her in.

Oliver realizes he needs help on Arrow Season 4 Episode 15 and calls in an old friend for help. Meanwhile, Thea has a heart to heart with Malcolm.

Guilt is the word on Arrow Season 4 Episode 14 as Lance begins to think Donna may be safer without him and Oliver feels the shame of not sharing with Felicity.