Sure is. The story of the Boston Strangler is a factual one. It's a well-known and documented part of criminal history. Many books and films have been made about it to recount the terrifying events.
Definitely a true story. The Boston Strangler's case was widely covered in the news and documented in historical records. It caused quite a stir at the time.
One important fact is that the 'Boston Strangler' case happened in the 1960s. Albert DeSalvo's identity as the possible perpetrator was a major aspect. The fact that the victims were mainly women living in the Boston area and were strangled is also crucial. And the case got huge media attention which put pressure on the police to solve it.
Well, in the 'The Boston Strangler' true story, Albert DeSalvo was the main figure. He was able to gain access to the victims' homes, sometimes by posing as a maintenance man or something similar. There were multiple victims, and their deaths were quite similar in nature - strangulation. This led to a huge manhunt and a lot of media attention at the time. The police had to piece together different clues from the crime scenes to try and catch the perpetrator.