death
Wake them up and ask them!
Yes, if the addressee is deceased, mail can be marked "Deceased Return to Sender." This informs the postal service that the recipient is no longer alive, and they will typically return the mail to the sender. It may also be helpful to include a note or documentation indicating the addressee's passing to expedite the process.
No, DNA can be taken from deceased persons.
Marriage is a contract. A deceased person does not have the legal capacity to willingly enter into any contracts.
yes the funeral home usually does a deceased persons nails,and hair and general grooming to get them ready for their "showing"
Mail tampering is when someone tampers with another persons mail. No one is allowed to open mail or destroy mail that is not theirs.
It sounds as if you're not legally responsible for the deceased client.
Your local police department
Not unless they were guarantors of the debt.
If they have the letter of authority, yes.
If the person is deceased, you can contact the trustee if you know who the trustee is.