Explore a collection of movies and TV shows that delve into the intriguing theme of 'Fifth columnist.' Uncover the hidden agendas, spies, and traitors lurking within secret societies or even seemingly loyal communities. Witness thrilling stories of deception, espionage, and double crosses as our selection takes you on a journey that challenges the essence of trust and loyalty. Get ready to unravel the mysteries behind these gripping narratives and discover the true identities of those who lurk in the shadows.