Karina Vetrano went missing on August 2, 2016 after leaving the house to go out jogging in Spring Creek Park, New York. Her brutally murdered body was discovered along the running path a few hours later.  Medical examiners recovered a DNA profile underneath Karina’s fingernails, on her back, and on her cell phone.

Did police and prosecutors have enough forensic evidence to put Karina’s killer behind bars for life?