Who Killed Sam? Part 2

Well last night poor Martha was arrested! They just can't do that, despite evidence that suggests otherwise. We all know Martha would never do such a thing!!!

Anyway, last night some forensic evidence came back, so the note was written on a pad from Martha's place (well actually it's not Martha's place, it's Roman's and I'm sure he referred to it as Martha's place!) and a random strand of Martha's hair was found in Sam's car. Again, this kind of doesn't prove a thing, as the hair could've been on someone else and fell off the clothing by the real person who planted the note.

I'll be interested to watch tonight, but either Sam wrote the note herself (well she WAS upstairs when Martha sprung her in the apartment) and swiped some of Martha's hair (ewwww) and planted it all in the car to set Martha up, or it was all Roman's doing. He killed Sam, then wrote the note, but had some of Martha's hair on his clothing which came off when he planted the note.

Or perhaps Sam and Roman are/were somehow involved together and the death was an accident?