What are you favorite unproven theories?

Here are mine.

Vic is NOT the father of Danni's baby and even Vic himself believes it. He only told her "When he's old enough." to not anger her, as he didn't want Corrine finding out he slept with her. She finds out anyway though.
Aceveda is a closeted gay or bisexual man and his SA awakened sexually repressed urges that he was only able to keep under control by reenacting it with a prostitute.
Dutch both admired and envied the Cuddler Rapist because the CR was able to act out repressed fantasies that Dutch secretly wishes he could himself which is the reason why he's lonely and has no luck romantically or sexually with women. We get only a glimpse of this with the cat but it's deeper than that.
Ronnie always wanted to be a good, stand up cop and never wanted to take part on any of the Strike Teams activities but once their more nefarious activities such as murder, grand larceny and working within gang activity escalated, he realized that Vic would never let him leave and forced himself to take on dark morality.
Kavanaugh himself was crooked cop just like Vic before he joined IAB. In fact, he only joined IAB to take the heat off of himself when his fellow cops and superiors started getting suspicious about him. That's why he knows how Vic thinks and functions to a certain degree but he still underestimated him.