The social experiment with a deadly twist returns for its most intense season yet. In season 3 of *Murdered at First Sight*, the stakes are raised as new couples, paired by experts, must solve a complex homicide investigation on their very first date. This season introduces a fresh challenge: the duos are tasked with cracking baffling cold cases, forcing them to dig into the past to uncover long-buried secrets and forgotten motives. From a celebrity's mysterious disappearance to a seemingly perfect suburban murder, the pressure tests not only their intellect but also their new, fragile relationships. The gripping season 3 ended on August 18, 2025 sign up for a reminder. Will they catch a killer, or will the case destroy them first?