Heads up before you press play: Maternal Instinct is one of the more disturbing true-crime docs Netflix has put out, so know that going in. Director Jessica Dimmock digs into the 2020 case of Taylor Parker and the murder of Reagan Simmons-Hancock — a crime so extreme it’s genuinely hard to wrap your head around. Dimmock, who has strong documentary work behind her, resists the urge to sensationalize and instead tries to understand how something like this happens and who it leaves behind. It’s grim and heavy, not a casual watch. But if you follow true crime seriously and want a doc that treats a horrific case with real gravity, it’s streaming on Netflix now.