Either I have a very defective brain or some people just have a brilliant memory for detail while I promptly forget half of what I'm watching.
I have a better memory for the characters than the plot. I don't really care "whodunit". I'm not interested in all the red herrings and false trails and bogus clues. Just name the villain and stop wasting my time!
But I'm very aware of the introverted florist who hates swearing and is devoted to her tabby cat, even if her part in the plot rapidly escapes me. Never mind the identity of the murderer, does the florist become more outgoing? Does she develop a potty mouth? Does her cat live to a ripe old age? That's what I really want to know.
The detectives are usually more interesting than the plot or who did the dirty deed. They've invariably got drastic personal problems of one kind or another. Alcoholism, mental disorders, domestic violence, drug addiction, you name it. My favourite is Saga Norén in The Bridge. Her social clumsiness, lack of empathy and emotional ineptness make her seem cold, insensitive and blunt, but she's honest and direct and a brilliant detective.
Jenny loves speculating as to who's the murderer. She'll come up with wonderfully elaborate theories about the culprit. And she'll remember all those incriminating details very clearly. Sometimes she's spot on, sometimes she's way off track.
Well, I'm pretty sure it was Colonel Mustard with the candlestick in the billiard room. Though it might have been Professor Plum. Who knows?