The Boston Strangler -

: Many officials and families of the victims doubted his confession due to its inconsistencies and a lack of physical evidence at the time.

: The killer typically entered homes without force, suggesting the victims either knew him or believed he was a service provider. The Boston Strangler

: In July 2013, modern forensic testing linked DeSalvo's DNA to the 1964 murder of Mary Sullivan , the last known victim. While this definitively tied him to one crime, it did not prove he was responsible for all of them, leaving the "multiple killers" theory alive for some. : Many officials and families of the victims

: Most victims were sexually assaulted and strangled with articles of their own clothing, such as silk stockings or nylons, often tied in distinctive bows. such as silk stockings or nylons