[Puzzle 05] • The Cairo Puzzle

**The underground hall is lined with pillars. At one end there's a statue of Isis. At the other, a statue of Osiris. In the middle there is a pool. Around it a dark shadow moves. A scream breaks the silence.

The shadow is red from the blood it has gorged on. Who will be next?**

When Isabel Sharp visits Cairo to search for her missing husband, she begins by visiting a hospital, which took in an American. But she's arrived at the wrong moment. A new mass uprising is being crushed in Tahrir Square. The next day an Egyptian billionaire announces a spectacular discovery at the Great Pyramid. Hoping that he can answer her questions, Isabel meets him.

Driven by her desperation, she ends up deep in the desert, at a camp run by the Muslim Brotherhood. They kill her driver, and then they ask her to carry out one simple task. They will lead her to Sean if she does it.

She has to find out what they know, but she also has to stop their murderous plans. The secret of the Great Pyramid is the final part of the puzzle that her and Sean have been trying to unravel for years. And in a fabled hall, believed by almost all to be an ancient myth, she discovers the deadly ancient secret that turns shadows red.

**She comes face to face with a force that knows nothing of mercy, but which inspired the founders of Christianity.**