Sounds logical to me. [Which may come as a surprise, given how defensive he's been of Marinette in public.] Before last week, I felt the most likely were Marinette, Yuno, or Jessie. Jessie's now been taken out of contention for obvious reasons. All guesswork of course with no means to confirm anything, but all of the souvlaki hosts so far have in some way appeared harmless or nonthreatening, but have been formidable in combat. Marinette and Adrien fit best, but it hasn't been exact.

Personally, I find Clover rather unlikely, if only because it was only by luck she wasn't a victim of Elizabeth's plot. Judar is a possibility; he's clearly better at making allies than you'd expect. Adrien is less incapacitated by his injury than one would think, and I wouldn't put him out of running either. But something does strike about Marinette.

I should like to know your reasons for being so certain of Grell, Luke, Jason, and Adam. They aren't who I suspect most, but I hope when you say that you know they're clear, you actually know. Your assumption that I'm clear because I haven't killed you yet doesn't fill me with confidence - perhaps attempting to use you to evade suspicion would be an equally good strategy as killing you would be.