"Let’s also not forget that it was Middlesex County that put the now much disputed Shaken Baby Syndrome on the map in the 1997 prosecution of Louise Woodward, a British au pair accused of killing 8-month-old Matthew Eappen. The state’s expert witness in that case has since said
that he would not give today the testimony that he gave then,
explaining that we now know that a number of medical conditions can
produce the symptoms that experts once claimed could only have come from
shaking. It’s just another example of the problems with asking judges
to be the gatekeepers of what science does and doesn’t get into the
courtroom. Dozens, perhaps hundreds, of people were convicted based on
expert testimony that we now know was at best grossly overstated, and at
worst was simply false. But these prosecutors didn’t just rely
on bad science; they actively suppressed evidence that not only should
have informed that their theories about these cases were flawed, but was
ultimately the evidence that led to the accused getting freed. A just
system would sanction them. If they aren’t punished, there’s little
disincentive to do it again, or for other prosecutors who might be
tempted to shortchange a suspect’s rights."
https://www.washingtonpost.com/news/the-watch/wp/2015/10/20/middlesex-county-mass-prosecutors-withheld-exculpatory-evidence-in-two-shaken-baby-cases/