Julie Kenner is one of my favourite authors. She of the "Good Ghouls Do" series and the "Demon Hunting Soccer Mom" series, her writing is usually full of humour and zany actions. The Givenchy Code follows in this tradition, except it is missing the supernatural elements.
This novel finds out heroine, Melanie Prescott, stuck in another series of dead-end jobs. She is studying math and history at university and is a wizard at codes. Suddenly she is sucked into a live-action version of a on-line video game she used to play.
Hunted through the streets of New York by a mad man, Melanie must trust, Matthew Stryker, a complete (and very handsome) stranger, to help her solve the puzzles and make it through the experience alive.
This book is a nice tour of New York and run through math puzlles and theories. It was a fun read. Not going to change your life, but like most of Kenner`s work, fun.