Power Rangers Season 3 Episode 28
Overview
Katherine and Aisha help teach a chimpanzee, Kelly, to communicate with sign language for a school assignment. However, Rita Repulsa and Lord Zedd turn the ape into the Sinister Simian monster to lure the Power Rangers out to fight her. Now, the Rangers have to find a way to defeat the ape monster without harming her and return Kelly back to normal.