(a) The owner or lessee of a motion picture theater where a motion picture is being exhibited, or the authorized agent or employee thereof, who alerts law enforcement authorities of an alleged violation of Kan. Stat. Ann. § 51-301, and amendments thereto, shall not be liable in any civil action arising out of measures taken by such owner, lessee, agent or employee in the course of subsequently detaining a person that the owner, lessee, agent or employee in good faith believed to have violated Kan. Stat. Ann. § 51-301, and amendments thereto, while awaiting the arrival of law enforcement authorities, unless the plaintiff can show by clear and convincing evidence that such measures were manifestly unreasonable or the period of detention was unreasonably long.

(b) “Motion picture theater” has the meaning ascribed thereto in Kan. Stat. Ann. § 51-301, and amendments thereto.