The sources provide an extensive examination of the Boston Strangler case, detailing the murders of thirteen women between 1962 and 1964 and exploring the persistent controversy surrounding the killer’s identity. The episode summarizes the investigation, noting the limitations of early forensic science and the inconsistent confession of primary suspect Albert DeSalvo, who was later linked to one victim by DNA evidence but never conclusively tied to all thirteen. Additionally, the sources offer a comparative analysis between the Boston Strangler and the Zodiac Killer, contrasting their methods, victim profiles, and unique interactions with law enforcement and the media. Both cases are presented as pivotal examples of unresolved serial murder mysteries that significantly impacted American society and popular culture during the 1960s. The comparison highlights the Strangler's intimate, home-based attacks versus the Zodiac’s public, taunting communications through ciphers and letters.

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