Under Seal: Rendering a Verdict Without All of the Evidence?

How is it possible for a jury to render a fair and impartial verdict when some of the evidence is sealed? How does one even know that evidence is sealed? After all, it's a little hard to know what you don't know.

Consider the Casey Anthony trial. Are you aware that evidence - the release of the photographs of Caylee that were seized from the Anthony home and some search warrants and affidavits - is still under seal?

So, why were photos of Caylee Anthony sealed?

Casey Anthony: What REALLY Happened to Caylee and Why Truth Matters by Wendy Murphy, Charles Whitfield, Barbara Whitfield

Links:

10 Fascinating Sealed and Secret Documents

Secret Files on Jack the Ripper Case Will Not Be Released to Public

Nightmare on Suburban Street - Some interesting information on Casey’s cell phone calls and pings.