Final answer:
Ted Bundy is the serial killer who murdered 30 women between 1974 and 1979, highlighting the danger of serial killers in society.
Step-by-step explanation:
The serial killer who murdered 30 women between 1974 and 1979 was Ted Bundy. He was one of the most notorious criminals of the 20th century, known for his charm and intelligence which he used to gain the trust of his victims and the public. Bundy's killing spree across several states left a permanent mark on American society and the legal system. His heinous actions highlight the danger of serial killers and the importance of understanding criminal psychology.