People constantly boast about anticipating the "big reveals" or "whodunnits" in novels and films. But, these big reveals are always very implausible, if not outright silly. Real life rarely has twisted endings. So they're predicting how the author will try to surprise his or her readership. If they imagine that this somehow will transfer to real events in the real world, they're very much mistaken. In novels, the killer might be the very last person you expected. In real life, the killer will be the most likely suspect.
I rarely read or watch this sort of stuff, and when I do, I rarely anticipate the big reveals or guess the killer. I'm always suspecting the plausible suspects or outcomes.