Offline
I'm seeing a lot of people posting theories that Mary Morstan is Moran, or that Tom is Moran, so just to nip those in the bud; please recall that the Peer of the Realm who was orchestrating the plan to blow up parliament was Moran.
His character has already been done in The Empty Hearse.
Offline
There was a character named Moran, but the "personality" of the Canon Moran hasn't been featured.