Tenn. Code § 39-15-504
In a case where an alleged offense under this part has been committed against an elderly or vulnerable adult, the state may make a motion that the testimony of the victim be preserved. Upon the filing of the motion, the court shall set a hearing on that motion within fifteen (15) days. At the hearing, the court shall set a date for the deposition of the victim to be taken. The date for the deposition of the victim must be within sixty (60) days of the filing of the original motion. Rule 15 of the Tennessee Rules of Criminal Procedure governs the manner by which the court is to proceed. It is presumed that a victim under this part needs to have testimony preserved. Rule 15 of the Tennessee Rules of Criminal Procedure governs all other motions to preserve testimony of a witness, made by either party.
T.C.A. § 39-15-504