A picture of Stephen Amell as Oliver Queen from the TV series "Arrow." Facebook/ Arrow

The trailer of “Arrow” Season 4 episode 18 shows that Damien Darhk is not yet done and may continue to play a big role in the future episodes. The trailer also teases that someone is about to die.

[Spoiler alert]

Damien Darhk may have lost his powers, but he will continue to play a big role in the TV series. The trailer of the next episode shows Malcolm (John Barrowman) visiting Darhk in his cell. According to the synopsis of the next episode, the heroes will learn that Malcolm intends to rescue the villainous character from jail.

The heroes on the other hand are facing multiple problems. On the one hand, Felicity (Emily Bett Rickards) has decided to leave the team and there is also a traitor in the team. Oliver discovers that Andy Diggle (Eugene Byrd) is the traitor and fights him.

Andy’s brother John (David Ramsey) enters the room just in time with a gun pointing at Oliver. John threatens the superhero by saying he knows the exact location where the vest will not protect him. “John he thinks i’m a traitor,” Andy pleads with his brother.

John appears to find it hard to believe that his brother is a traitor. Andy, however, met with Malcolm in the previous episode of “Arrow” Season 4. With one character set to die in the next episode, Andy has presented himself as a strong candidate to be the one to leave the TV series.

The trailer teases a heart rate monitor at a hospital flatlining. The video does not reveal who dies in the next episode of “Arrow” Season 4, but shows that the character will die at 11:59. Apart from Andy, Captain Lance (Paul Blackthorne) is speculated to be the leading candidate to die.

Credit: YouTube/ The CW Television Network