The so-called Zodiac Killer terrorised the San Francisco community in the 1960s. Fifty years later, a man from county Louth is joining hundreds of online sleuths to try to crack the notorious unsolved case. Can he crack the alibi of one of the main suspects? When his alibi is hanging out with anarchists in Derry, maybe he can. (2022) 

Narrated by Nicoline Greer

Produced by Damien O'Sullivan and Nicoline Greer

Sound Supervision by Ciarán Cullen