Elysia Rotaru

Oliver and Diggle learn that Merlyn is going to break Darhk out of prison. Meanwhile, Laurel gets a surprising offer.

Following the shocking events in the previous episode, Oliver and Diggle race to rescue Thea, while Felicity, Curtis and Noah join together to stop Darhk.

Clark investigates a recent attack and fears it is the work of a serial killer. Davis fears his blackouts may mean he is the serial killer and confesses his suspicions to Chloe.

In the season four finale, Oliver teams up with a surprising force in an attempt to stop Damien Darhk and his magic once and for all.

When Team Arrow learns what Damien Darhk's devastating next move is, Felicity realizes she needs to ask her father, Noah Kuttler (Tom Amandes), for help. Noah and Oliver have a heart to heart talk that leaves Oliver rattled.

A heartbroken Cupid (recurring guest star AMY GUMENICK) returns to wreak havoc on Star City with one goal – to destroy anyone in love. When the team learns that she's targeting couples on their wedding day, the recently broken up Oliver and Felicity decide to pose as bait with a fake wedding.