I'd be interested to see the nature of this DNA evidence. The finding of DNA from another individual doesn't rule out the possible (uncaptured) existence of this guy's DNA at the scene, as well.
Deception seems to be the name of the game. Many of the Jews in WWII Germany just thought they were going to take a nice shower. A person can be deceived by evil men and that doesn't make the victim evil. Mt 24:12 And because iniquity shall abound, the love of many shall wax cold. One can also be deceived into not caring for mankind. That was the condition of Sodom and Gomorrah -- not just that the practiced sodomy, but that she strengthened not the hand of the poor and needy, i.e. didn't help and didn't care. Just like many in America today. G~d apparently considers that a great evil because he destroyed Sodom and Gomorrah.
Eze 16:49 Behold, this was the iniquity of thy sister Sodom, pride, fulness of bread, and abundance of idleness was in her and in her daughters, neither did she strengthen the hand of the poor and needy.
Fulness of bread is similar to rich and increased with goods here*:
Re 3:15 I know thy works, that thou art neither cold nor hot: I would thou wert cold or hot.
16 So then because thou art lukewarm, and neither cold nor hot, I will spue thee out of my mouth.
17 Because thou sayest, I am rich, and increased with goods*, and have need of nothing; and knowest not that thou art wretched, and miserable, and poor, and blind, and naked:
18 I counsel thee to buy of me gold tried in the fire, that thou mayest be rich; and white raiment, that thou mayest be clothed, and that the shame of thy nakedness do not appear; and anoint thine eyes with eyesalve, that thou mayest see.
There's a fire coming.