The following is a claim about a new discovery beneath the Giza Necropolis, which Zahi Hawass poo-poos (I understand the reason he doesn't want people to jump the gun and start spewing speculation; although, he is no stranger to getting excited over new findings and discoveries). To Collins, the evidence is clear, and he chronicles it in his latest tome: Beneath the Pyramids. Featured alongside the synopsis are links to Andrew Collins' web site, his newsletter, and contact information.
At first glance, his speculation does seem a bit like yellow journalism, partly due to the misuse of "pharaoh" in relation to the Giza Pyramids (the title wasn't used during the Old Kingdom). I feel a tangent coming, so I'll stop there.