Its abandoned but where are the owners

[Josh Norris]

So I'm having an issue that I haven't had to deal with yet and I'm counting on the countless brilliant real estate minds on Bigger Pockets to help. I found a property in the Seattle, Washington area that is definitely abandoned. When I look up the parcel number and search for all records with the owners names all I can really find is an ASSIGNMENT DEED OF TRUST/MORTGAGE record, what exactly does this mean? Is this showing that the property has been put into a trust? I cant find any other properties under their name, no death certificate, not beneficiary info. Under the tax records they are up to date on their taxes and the property address is where the taxes are being sent. I am looking for any other tricks to find who I can contact to make an offer on the property.

Thanks in advance