Derek Hamilton

When Lana and Jason are attacked by an unseen assailant, suspicions initially fall on Clark's new girlfriend, Alicia. Clark is forced to take a hard, truthful look at Alicia, who's hurt by his lack of loyalty. Meanwhile, Jason's mother Genevieve returns to town with an offer for Lex.

In the season premiere, Oliver must transform from vigilante to hero. Diggle and Felicity travel to the island of Lian Yu in search of Oliver, who left Starling City after the devastation of The Undertaking and his failure to avert it. Convinced to return home, Oliver finds that things are in much worse shape than he imagined – Isabel Rochev (recurring guest star Summer Glau) is preparing a hostile takeover of Queen Consolidated, Thea refuses to visit Moira in jail, Roy is trying to fill the void left by the Arrow's absence, and Laurel is working with the District Attorney's office to take down the vigilante. Meanwhile, flashbacks to the island show Oliver's mentors Slade (new series star Manu Bennett), Shado (guest star Celina Jade) and Oliver in a desperate situation.

Jennifer Shannon can always be counted on to find treasures on the garage sale circuit - these same bargain-hunting skills help her solve crimes, too.

Sorenson gets involved with a witness from the `exotic' dancer killing and finds himself a lot of trouble.