Get Smart (1965)

S1E3 School Days

Max goes undercover at the CONTROL spy academy to uncover a KAOS infiltrator. The academy has been compromised, prompting Max and his loyal dog Fang to enroll as students, while 99 takes on the role of a teacher. Three students—Dimitri, Grillak, and Zukor—are under suspicion. Max needs to confirm that Dimitri speaks an obscure East Himalayan dialect, Zukor's handwriting is distinctive, and Grillak has a heart-shaped birthmark. When his attempts to clear their names lead to trouble, Max and 99 find themselves captured and strapped to a bomb. Thankfully, Fang's quick thinking saves them just in time.