Latest clue from jkrishan on episode 6:
jkrishan: Could a flower hold the key to Hanna’s true motives?"
Q: jkrishan: the flower that you mention. Is it the one Dexter was looking up in the preview?
A: Chlojack - Yep! The same flower

Q: is there an intense scene between hanna and deb?
A: BobbyD - I don't believe Deb and Hanna share any screen time in Episode 6.
Q: Anyway, in a preview Showtime put up a while back, there was this cool little scene in a Christmas display setting of sort. I asked you about this before. Anyway, it appears that Dexter was about to needle his newest gal pal. Basically, will Hannah get a glimpse of the Dark Passenger in this episode? I kind of hope it happens hahahaha.
A: I won't let on what happens in that "Christmas display" scene (for fear of spoiling), but I will tease that it occurs within the last 5 minutes of the episode.

Sounds like she really did poison her hubby with the flower. Wow, she really is a bad girl:D
Also, Deb will be going on a date with Sal Price. What are the odds he winds up dead by the episode of episode 8? (With Hannah killing him?)