It’s April 2020 and the world is locked down. In Oklahoma, a woman named Talina Zar posts a chilling message on Facebook: she’s sick with COVID and heading to a remote lake, alone — to recover, or to die. Then, she vanishes. As days turn into weeks, strangers online — true crime obsessives with time to kill and nowhere to go — begin digging into her disappearance. What they uncover is something far stranger, and far more disturbing, than they could’ve ever imagined.. In Season Three of What Happened To…, investigative journalist Melissa Jeltsen unravels a mystery born from isolation, obsession, and a pandemic that made everyone feel like a potential suspect.