TVF:
Two guys turned up dead, and Sherlock figured out that they were both murdered while faking a murder. Clever, right?
My biggest problem with Elementary Season 4 Episode 21 was that almost the whole investigation could've been avoided if the cops had done a pretty basic thing: check the alibi of the victim's spouse.
Oh that was much better than a 3. Finding out who was the killer in this one was a bit of a challenge but I got it before they revealed it. Not only that but I also knew that Sherlock's dad was aware of what his mole was doing and was going to do something about it but I didn't think he would go as far as he did.
These cases just never get stale.