Hundreds send comments, tips after ABC News "20/20" report on Paul Fronczak. Nov. 5, 2013 — -- Hundreds of ABC News viewers wrote in and many offered tips that could help solve the decades-old ...

Two hairdressers, could one be a murderer? 20/20 takes you inside this chilling murder mystery as it unravels. 'The Final Cut’ premieres Friday, Nov. 21st at 9/8c on ABC. Stream on Disney+ and Hulu.