A significant breakthrough in a cold case occurred when a TikTok post led to the arrest of Benjamin Robert Williams, a fugitive accused of murdering his ex-girlfriend Joana Peca in front of their children in 2021. The video, posted by true crime enthusiast Jasmeen Alexander, aimed to raise awareness about the case and was seen by a good Samaritan in Mexico who recognized Williams. Following a tip to the U. S. Embassy, authorities apprehended Williams after a three-and-a-half-year manhunt.

The tragic incident occurred at a cemetery, where Peca was shot multiple times while holding her baby, with her four-year-old present. St. Petersburg Police Chief Anthony Holloway expressed relief at Williams' capture, stating it alleviates the threat he posed to the community and Peca's family. Alexander, who has a significant following on TikTok, expressed her astonishment at how her video contributed to solving the case. This event underscores the power of social media in aiding law enforcement efforts and highlights a unique intersection of crime, community awareness, and technology.