Green Arrow

S4 E1: 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.