The Concordances of the Red Serpent — William Meikle

Patty Doyle holds the secret to eternal life, but it may only bring her an early death. Patty is working on a journal of a 14th Century alchemist. But after mentioning it in her blog she gets to the office to find everyone brutally murdered. Now she's on the run pursued by a killer who wants the secret of eternal life it contains. The Concordances of the Red Serpent is a thriller set in the USA, Canada and Scotland and echoes back to the glossy caper movies of Hitchcock. Mix with a bit of Da Vinci Code type musings on alchemical secrets and stir well.