Thank you for the clarification Charles.
There would need to be an estate opened in the step father's name. This would require someone, could even be a stepchild to go to the probate court in the county where he died. The administrator of the step father's estate would collect the assets of the step father, pay the step father's debt and distribute all remaining assets directly to the estate of the step mother.
Once the assets have been distributed to the estate of the step mother they are in the control of the stepson. If the stepson is not acting in the best interest of the heirs of the stepmother then the heirs can file a petition to have the stepson removed as administrator and request the court appoint a new administrator. The court can appoint a different heir or possibly the public administrator if everyone is fighting.
I cannot provide you with legal advise. I have provided you with information about the law related to your question. My answer, and any information that you find online, should not take the place of having a consultation with a lawyer in your area to advise you regarding your specific issues.
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