We all saw Michie cast a rogue vote last eviction. Like myself, many people knew he would try to pin it on someone else. He was never Kemi's biggest fan. Because Nick won HOH, his target for pinning the vote changed from Nick and Bella to Nicole. Nicole has been insistent to the rest of the house that she was not the voter, but there are some that still believe that she voted for Jessica and also has the power.
We've already seen so much happen this week that was not shown in the episode. There was a huge blowup between the previous "Black Widows" alliance because quite frankly Bella can't shut her mouth. She's exposed every single alliance she has been a part of, including spilling Gr8ful to Sam. She is now playing in total damage control mode and it's obvious to the other house guests, as well as Nick, that she is the biggest problem in the house.
Jessica and Cliff are on the block, I thoroughly expect him to backdoor someone. Most likely Nicole. The votes will be tight, but if she keeps playing like she is she can get the votes from the Six Shooters to stay.