Ghosts returns for a third series following young couple Alison (Charlotte Ritchie) and Mike (Kiell Smith-Bynoe), who unexpectedly inherit a grand country estate only to find it is both falling apart and overrun with ghosts. When a historical documentary team comes to film at Button House, Alison and the ghosts are shocked to discover that the assassination plot they’re exploring involves one of their own. Meanwhile, Mike - always on the lookout for free publicity - begs Alison to accept the offer of a television interview about the old house. The only hitch is Alison is terrified of speaking on camera. Luckily, Thomas is there to coach her in the art of speech-giving. What could possibly go wrong?