Fire Must Burn

London, 1947. After recent events have left the normally steadfast Iris Sparks thoroughly shaken, she's looking forward to some peace. With The Right Sort Marriage Bureau doing well, she and business partner Gwen Bainbridge are due a holiday. Until Iris's former boss enlists their help for a secret mission. Iris, who left British intelligence after the war, is being recruited for her Cambridge connection to one Anthony Danforth. She hasn't seen Tony in almost ten years, yet she and Gwen must manipulate him into hiring their marriage service.