Mo. Rev. Stat. § 513.320: In case of death, executions unexecuted to be delivered to successor.

When any sheriff shall die, it shall be the duty of his executors or administrators to deliver over to the persons appointed or elected and qualified to succeed the deceased, all executions unexecuted; and for failure to do so, said executors or administrators, and the sureties of the testator or intestate, shall be responsible.