Then Lord Inverkillen, Earl and head of the family, is found dead in mysterious circumstances. The inspector declares it an accident but Mrs MacBain, the head housekeeper, isn't so convinced. As no one is allowed in or out because of the illness, the residents of the house - both upstairs and downstairs - are the only suspects. With the Earl's own family too busy doing what can only be described as nothing, she decides to do some digging - in between chores, of course - and in doing so uncovers a whole host of long-hidden secrets, lies and betrayals that will alter the dynamics of the household for ever.