Former FBI Special Agent Bryanna Fox talks about Luminol and why it might have been used at Annie's house.

Nancy Guthrie, 84, has been missing for over a week. Recent searches at her daughter Annie's home raised questions about potential evidence collection.

Set design’s loss may be criminal justice’s gain. A new technology may eventually replace luminol in detecting traces of blood. In films or television police procedurals, the detectives go in, spray ...

Add Yahoo as a preferred source to see more of our stories on Google. For starters, Fox tells me that Luminol isn't presented by a "flash." "It is a fluorescent blue light. You need to use it in ...