Trail of Blood

Trail of Blood

Available on Investigation Discovery, Food Network, Science Channel, Discovery, TLC, Travel Channel, HGTV, Prime Video, discovery+, Hulu, Sling TV, Animal Planet, Philo, AHC GO, Destination America GO, Discovery Life GO, Cooking Channel
S1 E3: Nancy and her children are found dead in an apparent murder-suicide. Fifteen years later, Donna falls to her death in the Grand Canyon. But investigators discover they're linked and are confronted by a serial killer who's been lying in wait for decades.