Mr. Campion's war

Campions young and old, extended family members and loyal friends are gathered at the Dorchester Hotel to celebrate Albert Campion's seventieth birthday - along with some intriguing, unrecognizable guests. Who exactly are the mysterious, aristrocratic, scar-faced German, Freiherr Robert von Ringer, and the elegantly chic Madame Thibus - and what is their connection to Mr. Campion? Campion has decided the time has come to enthral his guests with...