"Boston Strangler,” which stars Keira Knightley and Carrie Coon and in which Mr. Nassar, who died in 2018, is played by Greg Vrotsos, asserts in a postscript that “George Nassar is still in prison in Massachusetts.”

https://m.imdb.com/title/tt2560078/?ref_=nv_sr_srsg_0

Fairly attention-grabbing paragraph from nassar's nyt obit which was printed solely just lately as a result of the demise is just now being reported. He's the man the Boston strangler confessed to in jail. Sadly for the film the publish script can be fallacious by 5 years!