Regie : Paul Gibson, Mit : Phoebe Sparrow, Jo Stone-Fewings, Georgina Rich,

Sister Boniface is called by DI Gillespie to the home of minister of defence, Charles Streatham, where guest Mary Sparkes has been found dead at the bottom of a staircase. Quickly assessing Sparkes has been murdered by poisoning, Gillespie and DS Livingstone have to identify the murderer among the persons in the house: one is reporter Ruth Penny, disguised as a maid and looking for a scoop.