Alison Araya

Madison and Travis witness different sides of the National Guard's occupation of their neighbourhood as the family tries to adapt to the new world.

Lex and Oliver Queen return to their old prep school for a reunion, but Oliver's old friends (and Lex's old enemies) start dying in mysterious accidents. Meanwhile, Clark learns that someone... or something may have left the Phantom Zone 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.

During an attack on the mayor's office, Ray is critically injured. Felicity is pleasantly surprised when her mother, Donna Smoak, shows up at the hospital to offer her support. With the SCPD out in full force looking for the assailant, Oliver and his team work hard to stay one step ahead of the police to find the man responsible. However, things come to a head when Ra's al Ghul kidnaps Captain Lance.

After a body is found strung up in the Wildcat gym, Ted Grant becomes the main suspect. Oliver and Laurel argue over Ted's innocence. Meanwhile, in flashbacks, when Maseo needs Oliver to remember where an informant for China White stashed key information, he asks Tatsu (guest star Rila Fukushima) to help jog Oliver's memory. Roy shares a secret with Felicity.