It is depressing to read about the havoc wreaked in some cases by apparently not credible “blood splatter science,” and some other fringe areas of “expert” testimony in criminal cases. A broad view of a wrongful conviction is set in a December 20, 2018 NYT article.   Also see this May 31, 2018 article at Pro Publica.   One wonders how many related civil suits for damages have been or will been filed for persons wrongly convicted, when cops and prosecutors should have known better.