Found a list on reddit of episodes from that podcast
The Mystery of the Grand Canyon Newlyweds, The Baffling Case of the Body On Somerton Beach, Kitty Genovese, Villisca Axe Murders, Hinterkaifeck Axe Murders, Sodder Children, (Approximately) 10 Things That Vanished Mysteriously, Lizzie Borden, Winchester Mystery House, What happened to the lost colony at Roanoke?, Donner Party, Jack the Ripper, Manson Family.