Sara L. Latta 
DNA and Blood [PDF ebook] 
Dead People DO Tell Tales

To a trained forensic scientist, blood spatter at a crime scene tells a clear story about what happened. The DNA in the blood can narrow down a list of suspects, clearing the innocent or helping send the guilty to prison. Readers will discover how blood spatter analysis and DNA fingerprinting began, how they are used now, and how they have solved decades-old mysteries.