James, Jolinda and Julissa Turpin share their stories with Diane Sawyer.

Plasse was murdered in 2011, and her case nearly went cold.

Blodgett's ex-boyfriend Daniel Bartelt was eventually convicted in her death.

Trailer: 20/20 ‘Ride or Die’ - premieres Dec. 17th at 10/9c on ABC A young mother brutally murdered. What secrets do her ex-boyfriend & his new fiancée hold? The new “20/20” premieres on a special ...

Melissa Etzler was walking her dog at a local park when a stranger attacked. Her case helped authorities solve the case of Jessie Blodgett, who was murdered a few towns away.

Trailer: 20/20 'Badass Detective' - Premieres Jan. 9th on ABC. Walk alongside one fearless detective who will stop at nothing to solve two high stakes murder mysteries. 20/20's 'Badass Detective’ ...