WATCH: Dr. Oz and CeCe Moore reveal the science of how you can help catch criminals with DNA. 

On today’s True Crime, Dr. Oz shares how the latest DNA technology led police to a suspected killer more than 45 years after a woman’s death.  Dr. Oz and “DNA Detective” CeCe Moore show you how at-home DNA tests can help investigators catch suspected criminals by tracing their family trees. 

Plus, a diabetic man who was imprisoned for attacking his wife with a hammer, is re-tried and his sentence reduced.  We investigate the science behind his “diabetes defense” and ask the question: can low blood sugar really cause someone to kill? 

Watch this episode live at 4:00 p.m. on WBGH and 5:00 p.m. on WIVT.