There has always been an air of mystery surrounding the life of Vivian Maier.

Maier, was a North Shore nanny who quietly pursued another endeavor – in her spare time she took extraordinary photographs.

Her body of work — 140,000 images — was discovered in a Chicago storage locker in 2007. And the photographs were not attributed to her until she died two years later. Our own Jay Shefksy first reported on the phenom before her life became the subject of a 2014 documentary. Now A new biography aims to answer some of the many questions about Maier. 

It’s called “Vivian Maier Developed — The Untold Story of the Photographer Nanny.”