Honey West - That's an interesting thought about Red carrying some of Katarina's memories. Other than actually being Katarina, that might explain why he knows how Katarina felt about Liz during her pregnancy and why he might know what she did on her date with Konstantin. I've seen some people speculate that Liz carries transplanted memories of Red's daughter's too. The Longevity Initiative did have to do with helping people recover from brain injuries. I thought that one might have been aimed at both recovering Liz's memories and helping Josephine. 

Honey West - I didn't realize Cinema Blend had done an article too. 
http://www.cinemablend.com/television/1605200/theres-a-wild-fan-theory-running-around-about-lizs-mother-on-the-blacklist

lara1 - I've rewatched all of Season 2, and various episodes from one and three. The places where I see support for the Red is Katarina theory are mainly the emotional scenes.  I have no real proof - just squirmy emotional reactions and dialog that could have a double meaning. I wrote a very long post yesterday and then decided not to submit it because every example I would list could be interpreted more than one way. The writers have done a superb job keeping all the theories afloat. What saddens me most is how many people on the TV Guide site and The Blacklist Exposed facebook say they would quit watching if the mommy theory is right. Whatever theory proves out in the end, I will always love this show. Nothing should take away from Spader's portrayal of Red over the years.

lara1 wrote:

Although I haven't looked at the other blogs/sites for a while now, I don't understand some reactions to the theories.  It is, at the end of the day, fiction and I feel I'm along for the ride and enjoy the puzzle.  It doesn't matter to me how the story ends, as long as the journey was worthwhile and I enjoyed the ride.  I don't even necessarily want to know the ending before the end.   

Hear hear!

HI Tuxie400.  that's interesting about the swing scene.  I did note when I watched it that the swingset was red!  Haha.  I'd always thought it was a foreshadow of that photo on the swing and of a closer connection with Red to Liz , and to her as a child, than we knew at the time.  And that he was trying to comfort Liz over the death of Sam, which, unknown to liz at the time, he had done.  But the mommie theory overlay on that scene is interesting

here is a teaser:  if Red is katarina, what do you make of the home movie scene?  do you think that Katarina is looking at a film of herself, with a child (I do not think that child is Liz).  And Tacoma park - do you think its because of "what happened there" to Red's family or to Katarina's family?  interesting!    

Tuxie400 - that's interesting about the home movies and the flowers.  I agree about cutting the mother out of the videos - when Red is working on the film in his workshop, he is clearly splicing the film.  I don't think it was to repair it in some way but to cut out portions of it.  Why, I don't know.  Unless there was a third person in the frame who was cut out, but I think it was the full view of the woman.

I didn't catch that view of Red in the flower picture.  I had noticed the similarity between the dress in the home movies and the one that Liz pulls out - that kind of leaves Red speechless, staring into the distance.  That certainly got a reaction out of him.    And, little Liz in the Summer Palace memory is wearing a dress with flowers on it.....hmmmm