- A shadow from the past returns.
– Malcolm Merlyn is targeted by assassins, and Oliver must save his best friend Tommy’s father, leading to major secrets being revealed. The Road to the Undertaking (Episodes 17–23) index of arrow s1 2021
, portrayed by John Barrowman, serves as a dark mirror to Oliver, providing one of the most personal and high-stakes rivalries in the series. Signature Style: - A shadow from the past returns
Some "CW-style" romantic drama and a "villain-of-the-week" format in early episodes. Cast Performances portrayed by John Barrowman