John Barrowman was on the Arrow panel, along with Manu Bennett, at DragonCon 2013 in Atlanta, Georgia, and he got to talking about a very particular scene in which he had to deal with a shirtless Stephen Amell.
Plus, *spoiler warning* according to ScreenCrush, TVLine has confirmed that John’s character, Malcolm Merlyn, will appear in at least 2 episodes of Arrow this season. No word on how he’ll return, if it’s in flashbacks or whatnot, but at this point, I’m sure Barrowman fans don’t really care how he’ll return.