History student Eloise Kelly is in London looking for more information on the activities of the infamous 19th century spy, the Pink Carnation, while at the same time trying to keep her mind off the fact that her mobile phone is not ringing and her would-be romantic hero Colin Selwick is not calling. Eloise is finally distracted from checking for messages every five minutes by the discovery of a brief note, sandwiched amongst the papers she's poring over in the British Library. Signed by Lord Pinchingdale, it is all Eloise needs to delve back in time and unearth the story of Letty Alsworthy and the Pink Carnation's espionage activities on the Emerald Isle.