In Ace Ventura : Pet Detective , Finkle murders the hiker .
Ventura realises that Einhorn is in fact Finkle : Finkle used the fact that the actual Einhorn was missing and presumed dead ( but with no body found ) , and took on her identity , had surgery to change his gender , and began a career with the Miami Police Department to eventually get revenge on Marino and the Dolphins .
Ace Ventura-COLON- Pet Detective