Matt Ryan’s guest appearance in Arrow as Constantine is right around the corner, airing on November 4th. He’s reprising his role from the short-lived TV show, and the October 26th issue of TV Guide provides a first look at Oliver Queen and Constantine in the same frame.
Details about the character’s background are in the TV Guide article, which alludes to a favor that Constantine owes to Oliver Queen.
Constantine’s guest appearance airs November 4. Arrow airs Wednesdays at 8 p.m. ET on The CW.