On this day: March 13

Zodiac Killer Claims Another Victim in March 13, 1971 Letter

On March 13, 1971, a letter received by a Northern California newspaper claimed the Zodiac Killer had murdered another person; the correspondence renewed debate about the case’s timeline and the letter’s authenticity.

First Court Use of Fingerprint Evidence in 1902

On March 13, 1902, fingerprint evidence was admitted in an Argentine court in a notable case that helped establish fingerprints as a forensic identification method internationally.