Death in the loch, a

During a Christmas party, Euphemia Martins ? together with Bertram Stapleford and manservant Rory McLeod ? is tasked by the slippery government agent Fitzroy with doing a little snooping at the Staplefords? Highland Lodge. When Euphemia discovers the purposes of the charade for which she has been demoted back to a maid, she is furious. There are plans afoot ? plans which involve signing the Official Secrets Act ?  Meanwhile, Rory still isn't speaking to her and Bertram is more interested in growing his awful new beard. The arrival at the Lodge of four mysterious 'Mr Smiths' ? and some outrageous proposals for Scotland?s future ? raises tensions to boiling point, and that's not even mentioning the German spy lurking in the woods, or the accident with some hot soup ? But when the inevitable dead body turns up, they must all work together or find themselves jailed for murder.