What would you do if you lost the Queen's pants?
Dilys, the Queen's maid, is the royal custodian of her Majesty's 'intimate apparel', otherwise known as the Queen's knickers. She guards HRH's smalls as if they were the crown jewels. She would be mortified if anyone got a glimpse of them.
But one day the knickers go missing, causing a national state of emergency and a diplomatic incident of catastrophic proportions.