Heather Bish began posting on TikTok decades after her sister, Molly, went missing. She uses the platform to ask the public for leads that may help find the person responsible for Molly’s 2000 disappearance and murder. Have any information that can help authorities find Molly Bish’s killer? Call investigators at 508-453-7575. #mystery #truecrime #crime | 48 Hours

Decades after Molly Bish’s murder, the case remains active and a new detective has recently joined the investigation, determined to solve it. "It's what I'm going to do," she tells Erin Moriarty. "We — we will do it." #mystery #truecrime #crime | 48 Hours