Jeanne Gould

83-year-old grandmother Jeanne Gould was found brutally murdered in a quiet Newmarket, Ontario neighbourhood.

An entire community was left in shock as fear spread throughout the streets. During the early summer of 2004, investigators raced to find the killer before he could strike again.

At the heart of the investigation was a single bloody fingerprint, a piece of evidence detectives believed would lead them straight to the murderer.

It seemed like the breakthrough they needed, but identifying that fingerprint proved far more difficult than anyone expected.

As days turned into weeks, confidence gave way to uncertainty. Who did the bloody print belong to? Will police find out before the killer strikes again?