I know it's implied in your comment, but I hope that upon discovering someone was playing Netflix at home and not watching it, that the conclusion is still only "he was not at home while his Netflix is playing" and not "he put on Netflix to premeditate a murder." If he lies and says he was at home then that's perjury, which only may be evidence of premeditation.

I know this whole thread was tongue-in-cheek, but when someone's life is on the line for murder you do need to remember that you're trying to prove that a person did it, and it's not sufficient to disprove the ways that they didn't do it.