‘Constantine’ the only comicbook-based show not to get a renewal...
And that was a shame. The show was excellent! They killed it before release by sticking it on Friday nights.
And the only one I could never get into, despite giving it a fair chance (6 or 7 episodes before I decided, "eh, why bother?").
Watching The Flash, on the other hand, feels like being about 12 or 13 again.