Greg Berlanti says that while John Constantine’s Arrow appearance is planned as a one-off thing, that doesn’t mean he’s saying the character won’t make more appearances beyond the planned Season Four ...

We already knew that Matt Ryan's John Constantine would make an appearance in next week's episode of Arrow, but now we have pictures to prove it. The episode, titled 'Haunted', will incorporate the ...

In the episode, Matt Ryan comes to see Oliver as John Constantine, offering his help in helping to bring Sara back to her own personality. You can check out the synopsis below. “Haunted” — (8:00-9:00 ...