Jaeson Lee

The next person on Arrow's list is Diggle's commanding officer and mentor from Afghanistan, Ted Gaynor (guest star Ben Browder). Oliver suspects Ted is responsible for recent armored truck robberies, but Diggle defends Ted and takes a job at Ted's security company to keep an eye on him. Oliver decides to make a move on Ted, putting him at odds with Diggle. Meanwhile, Thea suspects that Moira is having an affair with Malcolm (guest star John Barrowman); and Tommy and Laurel have an awkward dinner with him.

In the season four premiere episode, Oliver and Felicity's blissful getaway is cut short when Thea and Laurel pay them a visit and tell Oliver they need his help back in Star City. The city has been attacked by "Ghosts" – assassins led by a dangerous man named Damien Darhk (new series regular Neal McDonough). When Oliver returns, however, Diggle makes it very clear that he doesn't want Oliver on the team.

Chloe returns and begs Clark to kill Davis, claiming he can no longer keep the beast under control. Tess has assembled a team of meteor freaks, including Plastique, to track down Davis so Clark can kill him. However, things get out of hand once Tess’ team discovers she is double-crossing them.