Through The Keyhole (2013): Season 5, Episode 4

5 - 4: Stephen Mulhern, Rochelle Humes, Louis Walsh

Keith Lemon rummages around three more mystery celebrity houses to unearth clues for his studio panel to guess at the answers to one crucial question - 'Who habitates in a house like this?' The star-studded panel for this edition of the madcap programme are presenter Stephen Mulhern, 'X Factor' judge Louis Walsh, and pop star Rochelle Humes.