An Outbreak Of Kleptomania At A Student Hostel Was Not Normally The Sort Of Crime That Aroused Hercule Poirot S Interest. But When He Saw The List Of Stolen And Vandalized Items Including A Stethoscope, Some Old Flannel Trousers, A Box Of Chocolates, A Slashed Rucksack And A Diamond Ring Found In A Bowl Of Soup He Congratulated The Warden, Mrs Hubbard, On A Unique And Beautiful Problem . The List Made Absolutely No Sense At All. But, Reasoned Poirot, If This Was Merely A Petty Thief At Work, Why Was Everyone At The Hostel So Frightened?