The poison was cyanide, slipped into the sacred wine of ecstasy just before it was presented to Miss Cara Quayne at the House of the Sacred Flame.
The victim was a deeply religious initiate who had trained for a month for her last ceremony. She was also a very beautiful woman.... The suspects were the other initiates and the high priest. All claimed they were above earthly passions. But Cara Quayne had provoked lust, jealousy - and murder.
Roderick Alleyn suspected that more evil still lurked behind the Sign of the Sacred Flame....