Murder Mystery Party Case Files - Underwood Cellars

It's been 30 years since Cary Underwood disappeared. Due to a recent earthquake, we now have discovered the body and more clues to crack this case. Work alone or with others to deduce the victim's murderer, their motive, their means, and the opportunity for the murder.
Motive?- Who had a reason to kill the victim?
Does any particular person benefit?financially or romantically from the victim’s death.

Means?- Who had access to the murder weapon? Does any particular person have the unique knowledge, skill, or physical ability necessary to use the murder weapon?

Opportunity?- Who had a chance to kill the victim? Is any particular person unaccounted for (has no alibi) during the time the victim was killed?