In S02, we see flashback of detective Krebs exchanging longing looks with Cinda Canning. This was after we already knew Krebs to be an accomplice. This combined with Rose Cooper's description of the suspect seemed to solidify her as a perpetrator. It was only during the final reveal that we see the flashback again except that the person he was actually exchanging glances with was Becky.

I know I'm opening a can of worms by asking this, but have we been shown anything in S04 that may not be meant to be taken at face value in a similar way and is supposedly open to reinterpretation.

Edit: In other examples, S01 had a sex toy that turned out no to be one. S03 had Ben talking to someone on video, that turned out to be a cookie/himself.