This article is a partnership between ProPublica, where Pamela Colloff is a senior reporter, and The New York Times Magazine, where she is a writer at large. “I tucked Joel in, but I feel so guilty I ...

The largest-ever black-box study on the accuracy of bloodstain pattern analysis (BPA), a widely used forensic technique, has found concerning error rates and ...

In general, bloodstain pattern analysis (BPA) refers to the collection and subsequent forensic analysis investigation of the size, shape, and distribution patterns of bloodstains found at a crime ...

Anyone who’s a fan of TV police procedurals and true crime knows that many cases hinge on blood pattern evidence. That’s nothing new. The first documented use of bloodstain pattern analysis, or BPA, ...

A crime scene investigator who has worked more than 3,000 deaths uses his own blood on social media to teach the world how to approach the job. Jeffrey Gentry, 40, is a certified bloodstain pattern ...

David Camm lost 13 years of his life to eight drops of blood. In 2000, the Indiana state trooper was charged with murder after finding his wife and two children shot to death in their home. During the ...

As more people seek to go where no man has gone before, researchers are exploring how forensic science can be adapted to extraterrestrial environments. A new study highlights the behavior of blood in ...

New findings by state forensic experts have indicated that the bloodstain pattern analysis that was instrumental in convicting a former high school principal in Texas of murdering his wife in 1985 was ...

Bloodstain Pattern Analysis (BPA) is an interdisciplinary forensic technique that utilises principles of fluid dynamics and high-resolution imaging to reconstruct the events of a crime. The approach ...