https://www.tumblr.com/nalyra-dreaming/771629636536991744?source=share
I haven't heard about the theory that raglan is actually marius before but it sounds possible I guess? This is a little bit long and I'm not sure I understand all points that are made here but I wonder what you think of it?
It's definitely an interesting read, anon! It'd be pretty fascinating to look back on in hindsight if the show does go down that route, especially if it ends up paralleling both Armand and Marius using the Talamasca to disguise themselves (as in, Armand posing as Rashid and Marius posing as Raglan). I don't know though. I think a lot of the points they're making can be explained by the fact that both Rashid and Raglan do work for the Talamasca (Raglan does get kicked out before Tale of the Body Thief, but we're still three books away from that, so it makes sense that he'd legitimately still be working there during the events of IWTV).
It also makes sense to me that the Talamasca as an agency would want to be involved in this second interview given they seemed to have been studying the recordings of the first. I actually tend to think the Talamasca's focus was less on Armand and Louis than it was on figuring out the details of what went down with the Paris Coven given the nature of their work as anthropologists. The research they provided to Daniel seemed to really be about that (Raglan pushed for info on the fire long before Louis and Armand introduced it by sending Daniel the clippings of Theatres des Vampires burning down, and the focus on Louis being the dangerous one I think is about them knowing, likely through Sam, that Louis was the one who killed all the members of the Coven except Sam and Armand.
The build-up of Marius could be tying him to Justin Kirk's character, but he is also a major character in both Armand and Lestat's stories, and plays a really important role in the books Rolin's adapting. It makes sense to me that they'd be foreshadowing him and giving the audience a sense of anticipation ahead of his introduction in the TVL adaptation.
Justin Kirk is a terrific actor though! I don't know if I entirely see him as Marius yet, but if he is, I'm very excited to see what he does with the role. :-)