Land of the Giants (1968)

S2E23 The Marionettes

When a wounded puppeteer finds himself in need of help, the Earthlings decide to assist him by masquerading as his marionettes. However, their ruse doesn’t go unnoticed; the puppeteer's owner begins to suspect their true identities and plots to seize them for the bounty. As the stakes rise, the Earthlings must find a way to escape before they become part of the show for good.