The Prisoner (1967)

S1E13 Do Not Forsake Me, Oh My Darling

After having his consciousness switched to a different body, Number 6 regains consciousness in his apartment in London but struggles to persuade his coworkers of his true identity. Determined to uncover the truth, he journeys to Austria in search of the only individual capable of assisting him—the very person Number 2 is eager for him to locate.