Can someone be served papers while in a coma?

To answer your question, if the police were executing a search warrant, which is what it appears from your question, that would probably be legal. Anything other than that might not be legal. If you suspect any criminal investigation, you and your husband need to be represented by a lawyer. Be very careful making any statements or posting to the Internet. Those things can be used against you in court.

Anders is right. Even if your husband or you have not been charged yet, you and he should contact an experienced criminal defense attorney. Most criminal defense attorneys will meet with you at no charge for the initial appointment. You can use the "Find a Lawyer" link at the top of this page to search for an attorney.

If your husband or yourself is charged, then you need to retain counsel immediately