Keith at the finale (Spoilers)
So, eveybody dies of natural causes but Keith is murdered during a robbery?
Also, was the armored car company his? Then, why was he in such a dangerous job?
His name is on the armored car, so it stands to reason that he would be working in his office as owner of the company. IIRC this is the saddest death of the sequence.
https://c.tenor.com/cG6qfZ8ZoeEAAAAd/six-feet-under-six-feet-under-keith.gif