NEW EPISODES

THURSDAY, JAN. 22

IMPACT x Nightline: "Kill Code: Black Dahlia & Zodiac - Two Cases, One Killer?" (414) - Streaming on Disney+ and Hulu

The Zodiac and the Black Dahlia murders are two of America's most notorious unsolved mysteries. Could it be the same killer? Following a trail of cryptic clues, an amateur sleuth now says he's cracked the code on both cases.

'IMPACT X NIGHTLINE' EXCLUSIVELY REPORTS ON BREAKTHROUGH CLAIM IN TWO OF AMERICA'S MOST INFAMOUS COLD CASES, STREAMING JAN. 22 ON DISNEY+ AND HULU

THURSDAY, JAN. 22

IMPACT x Nightline: "Kill Code: Black Dahlia & Zodiac - Two Cases, One Killer?" (414) - Streaming on Disney+ and Hulu

Logline: The Zodiac and the Black Dahlia murders are two of America's most notorious unsolved mysteries. Could it be the same killer? Following a trail of cryptic clues, an amateur sleuth now says he's cracked the code on both cases.

Extended Logline: For decades, the Black Dahlia murder and the Zodiac killings have stood as two of America's most chilling unsolved mysteries. Now, in a stunning twist, amateur sleuth Alex Baber claims he's cracked both cases and that the same man is responsible for these infamous crimes. Baber says he deciphered the Zodiac's last unsolved coded message - a puzzle that stumped experts for decades - and uncovered a trail that, he claims, connects directly to the Black Dahlia murder. "IMPACT x Nightline" offers an exclusive look into Baber's findings, the evidence he says links the cases, and what law enforcement experts say, including the former head of LAPD's Cold Case Unit, who believes he may have finally identified the killer in both cases.

The Inside Scoop:

· "IMPACT x Nightline: Kill Code: Black Dahlia & Zodiac - Two Cases, One Killer?" begins streaming on Thursday, Jan. 22, on Disney+ and Hulu.

· This new episode, led by "Nightline" co-anchor Juju Chang, features an exclusive interview with Alex Baber, founder and CEO of Cold Case Consultants of America, who claims he has cracked both infamous cases, along with law enforcement experts Mitzi Roberts and Rick Jackson, retired detectives with the LAPD Cold Case Homicide Unit, who say they agree with Baber's findings.

· Additional new interviews include the following:

· Michael Connelly, author and host of the "Killer in the Code" podcast

· William J. Mann, author, "The Black Dahlia: Murder, Monsters, and Madness in Midcentury Hollywood"

· Nancy Grace, former prosecutor and ABC News legal contributor

· Brian Buckmire, ABC News legal analyst

· Josh Margolin, ABC News chief investigative reporter

· Kelly McLear, producer and true crime host

· Now in its fourth season, ABC News Studios' award-winning streaming newsmagazine "IMPACT x Nightline" investigates the topics dominating American culture, stories in the zeitgeist, and conversations around the globe. Eman Varoqua is executive producer.

-- ABC --