"Through the Keyhole" is a British television show that first aired in 1987. The program features a celebrity guest who invites viewers to explore their home through a series of clues and hidden camera footage. The aim is for a panel of celebrities to guess the identity of the homeowner based on the decor and personal items shown. The show is hosted by David Frost and later by Keith Lemon. Each episode typically includes humorous commentary and playful banter among the panelists. The format has been popular for its entertaining mix of celebrity culture and home design, appealing to a wide audience.