Colorado Parks & Wildlife Research Library

Hidden among the crates in a recently discovered World War II bunker are documents stamped with an elaborate black swan, the insignia of the murdered King Ludwig II. According to legend, Ludwig stockpiled a massive treasure in the years before his death, a cache of gold and jewels that would finance the construction of the largest castle of all time. But in the years since his death, no one has found any evidence that Ludwig had hidden anything. Until...

In a secret bunker, one of the world's most dangerous terrorists is rescued, and his captors are slaughtered. Jonathan Payne vows revenge -- but there is more to the bloody atrocity than terrorist reprisal. There is a plot in motion that will burn the world in the fires of holy war.

On a Danish shore, a Vatican priest is found - hanging on a cross. Within days, the same crime is repeated ... this time in Asia and Africa. Meanwhile, deep in the legendary Catacombs under Orvieto, Italy, an archaeologist unearths a scroll dating back two thousand years, revealing secrets that could rock the foundations of Christianity. Its discovery makes him the most wanted criminal in all of Europe. But his most dangerous enemies operate outside...