Is Rav the worst DI in the history of cop shows?
Seriously.
Every single time he chooses to pursue a line of inquiry, it is the wrong one. You would think that after Marcella proved him wrong the first half-dozen times, he would start listening to her or at least let her follow her own instincts and pursue other leads. Nope. He shuts her down immediately and forbids her from investigating anything but his pet theory. She then proceeds to ignore him and prove him wrong yet again.
How the hell does that guy ever solve any crimes?