Hercule Poj rot doesn。l need al J　his detective sk…S to realise　something iS l roubIing hiS　secretary，Miss Lemon—she hasmade lh ree mistakes in a simple Jetter．It seems an outbreak of　kleptomania a{the studenl hosteIi n　which her sister works iS distracting　his usually efficienl assistant．Deciding that desperate times call　for desperate measures，the great　detective agrees to investigate．Unknown to Poi rot，however．desperation is a motive he shares with a killer...