Is there an inexpensive way to terminate a dead beat parent's rights, so my husband can adopt him?

Step parent adoption. Hire experienced counsel and let them handle it.

What can I do to retrieve my car back without paying absurd storage fee without my consent or signature approval?

Pay the amounts demanded or the costs will increase. Thereafter be cautious about who drives your car.

Read the agreement. It likely has a liquidated damages clause within.

I really don't want to evict her. But O don't want to be sued for her health, and the son in law is a shady character.

If she is behind on her rent, treat her like any other unpaid tenant.

Is it correct that the following are not counted as probate assets even if the estate has other probate assets?

It depends upon the case. In Missouri most of the assets you described would be inventoried. I encourage you to speak with a ny probate attorney to...

Real Estate Lien

Hard to say. If a written contract they have ten years to prosecute. If oral contract then five years. Start to finish most collections cases take...

Can a grandparent get visitation with an adopted child?

Perhaps. You should interject Into any adoption proceedings to secure time.

Will I be in contempt of court if I deny visitation to his family when no arrangements were made?

Hard to say. Won't know until all the evidence is heard at the motion hearing.

Do I hire a p.i.?

Few courts want to address infidelity unless children are involved and the infidelity harms them. Hire one if you wish but I've never found the...

Is it possible for me to demand them to take back the car and return my money since they didnt uphold the contract/paperwork?

Sorry to hear of this. You may sue for money damages but I doubt the return of the car would be awarded.