Board Thread:Arrow discussions/@comment-26471653-20161119212353/@comment-31173742-20170204132745

I've read an interessing theory saying that Talia Al Ghul brought Tommy back to life, to get revenge of her father's death, killed by Oliver (where he kills one more time after a whole season where he decided to not be a killer (because of Tommy))

I'm 100% sure that Talia trained Prometheus in some way. Same outfit, same weapons, etc.