Killer Unknown follows an active investigation in real time as a task force cracks open the cold cases of Tulsa County, Oklahoma, starting with two of its most terrifying: the 1973 murder Veda Woodson and the 1998 murder of 16-year-old Dena Ann Dean.
- S1 E1 - Find the GirlNovember 24, 201842minAmerica's finest detectives come out of retirement to crack open 31 cold cases in Tulsa County, Oklahoma, starting with the 1998 murder of Dena Dean and the 1973 murder of Veda Woodson.Free trial of discovery+
- S1 E2 - Secrets and LiesNovember 24, 201843minA massive effort to contact Dena Dean's best friend culminates in a hopeful first contact. Conversations reveal a tense relationship Dena had before her murder, prompting the task force to take a fresh look at alibis.Free trial of discovery+
- S1 E3 - When the Devil CallsDecember 1, 201843minA devastated family recounts the horrifying moments leading up to the murder Veda Woodson on a deserted road. On the Dean case,investigators arrive at a shocking conclusion after looking into Dena's family.Free trial of discovery+
- S1 E4 - Closing InDecember 8, 201843minPressure builds as Mike Huff narrows is focus to a man who was Dena Dean's boyfriend in 1998 and one of the last people she had contact with on the day of her disappearance.Free trial of discovery+
- S1 E5 - Chasing TruthDecember 15, 201843minPhones are confiscated with a new plan to comb through communications between persons of interest in the Dena Dean case, while Mike Huff thinks a suspect's family may be hiding something in the Veda Woodson case.Free trial of discovery+
- S1 E6 - There is a SeasonDecember 22, 201843minThe task force races to put the evidence they've collected in the Dena Dean case towards prosecution. A shocking new DNA breakthrough keeps the Veda Woodson murder case from going cold for good.Free trial of discovery+