Tennessee Code Title 20. Civil Procedure § 20-2-112

(a) Where a wrongful death action has been instituted by any person other than an executor, executrix, administrator or administratrix of a decedent's estate, the estate may be made a party defendant to any civil action arising out of the same facts, happenings, or circumstances otherwise properly brought by serving process on the person instituting the original wrongful death action.

(b) If, after a decedent's estate is made a party defendant as provided in subsection (a), an executor, executrix, administrator or administratrix of the decedent's estate is thereafter appointed, the person who instituted the original wrongful death action shall notify the executor, executrix, administrator or administratrix of the decedent's estate in writing of all actions heretofore instituted against the decedent's estate. The failure of the person to notify the executor, executrix, administrator or administratrix of the decedent's estate, as provided in this subsection (b), may render the person liable for all resultant damages.

(c) Any individual served with process under this section shall notify any person or entity charged with the responsibility of defending the action to which the subject estate has been made a defendant. The notice shall be in writing.