Who was driving the 22-year-old's car after she was murdered? Crystal Gorto Tucker recalls seeing someone in a black jacket speeding in her friend's car the day she went missing: "I know that's not Cati." Watch our all-new 20/20 - TONIGHT (Friday, Oct. 9th) at 9/8c on ABC. Stream on Disney+ and Hulu (S49, E03). #ABC2020 #CatiBlauvelt