He deserves a large garbage bag and a larger hole...in a garbage dump...and buried, alive.
If a few perps were given the Biblical "eye for an eye" punishment, I wonder if such heinous crimes might go down?
And the aiding relatives scums need to be taken to the brink of a pit, put in a bag and dumped into the hole, then have to wait for hours, expecting at any moment for the dirt to start falling.
One might argue that it is consented to and isn't "cruel and unusual" to the person who's done the deed.