The informant's claim that broke the Boston Strangler case — and the confession it produced

Thirteen single women, aged 19 to 85, were strangled between June 1962 and January 1964.

They were found in their own apartments, ligatures made from their own clothing or stockings around their necks.

The investigation began fragmented.

City police and state police ran separate tracks, and information did not move between them.

In 1964, Attorney General Edward W. Brooke consolidated the case under a single lead prosecutor.

That prosecutor leaned on one source.

A man named George Nassar, a suspect who was questioned but never charged, claimed that Albert DeSalvo had confessed to him.

That claim, not physical evidence, redirected the entire investigation.

It produced DeSalvo's detailed confession in 1965.

No forensic test tied DeSalvo to the crime scenes.

DNA testing was decades away, and the confession was never checked against the physical record.

Nassar's credibility was never established.

His motive was never established.

The claim itself remains unverified, a single man's word carrying the weight of thirteen deaths.

How did one informant's assertion outweigh the absence of evidence?

How did a confession, untested in any court, come to define the case?

How did an investigation built on jurisdiction failures come to rest on a story?

That would require evidence the record does not provide.

THE FRAGMENTED INVESTIGATION

The first widely attributed murder came in June 1962.

The final attributed murder came in January 1964.

Between those dates, thirteen single women were strangled in their own apartments.

The ligatures were made from their own clothing or stockings.

The exact number of victims is stated as thirteen, but individual case details beyond the first and last are not in the record.

City police and state police did not share information.

The investigation fragmented along jurisdictional lines.

A detective in one city did not know what a trooper in another had found.

The crimes terrorized the region.

Press coverage was intense, and public fear ran through every neighborhood.

The manhunt stalled.

It stalled not because the killer was careful.

It stalled because the system was broken.

The turning point came in 1964.

Attorney General Edward W. Brooke consolidated the investigation under a single lead prosecutor.

One office, one chain of command, one set of files.

That prosecutor relied heavily on a single informant.

The informant was a man named George Nassar, questioned but never charged.

Nassar claimed DeSalvo had confessed to him.

That claim produced a confession.

The confession was detailed.

It was never corroborated by physical evidence linking DeSalvo to the crime scenes.

DNA testing was decades away.

The confession was never tested against crime scene evidence.

The investigation was criticized for focusing on a narrow suspect pool.

Some later argued the confession was coerced or fabricated.

The record does not establish that.