In their quest for world domination, Nazi Germany amassed what might be the largest collection of stolen wealth and technology ever acquired. Much of this has been recovered, but not all. What became of these Nazi secrets?

Zach seeks to determine whether time travel is possible. He meets a man who claims to have traveled back in time due to a secret government program and a group living in Liverpool known as "time slippers.

Zach tackles the ultimate existential question as he explores what happens when we die and whether or not we can have life after death.                

Religion and science both agree--the End of the World is coming. But when? And how? And is there anything we can do to delay the inevitable? To find out, we search for answers in two ancient civilizations that mysteriously vanished.

Zach explores the dark world of psychological mind control and even agrees to give up total control of his mind in an epic showdown with a mentalist.  

Zach wants to understand how one can be Superhuman. He meets a man who bent the metal frame of car door with his bare hands in a moment of crisis and a man who can feel no pain.

We're on the hunt for two of the most famed and valuable treasures from the Bible--King Solomon's Mines and the Ark of the Covenant. Do they exist? Can they still be found? Or... have they already been discovered?

Zach explores the unpredictable phenomenon of Sinkholes to determine just what causes them. He visits a man whose brother was killed when their family home was literally swallowed whole by the Earth.