London, 1947. Spirited Miss Iris Sparks and ever-practical Mrs Gwendolyn Bainbridge are called to action when Gwen's beau Salvatore 'Sally' Danielli is accused of murder! Sally has taken a job at the BBC studios at Alexandra Palace, but when the beautiful Miss JeanneMarie Duplessis - one of the Parisian performers over for a new variety show - is found dead in the old theatre, a number of inconvenient coincidences make him Suspect No. 1. Just days earlier, Miss Duplessis had arrived at The Right Sort, desperately looking for a husband - any husband - to avoid having to return to Paris. As the plot thickens, Iris is pulled back into the clandestine circles she moved in during the war and it soon becomes apparent that to clear Sally's name, she and Gwen would need to go on the hunt for a killer once more!