Seven Wonders — Ben Mezrich

When the reclusive mathematician Jeremy Grady is murdered, it's up to his estranged brother Jack to find out why. Jack's search leads him on a far-flung journey -- from Brazil, India, Peru, and beyond -- as he unravels the mystery that links the Seven Wonders of the World, and discovers that Jeremy may have hit upon something that's been concealed for centuries. With the help of scientist Sloane Costa, they discover a conspiracy to hide a roadmap to the Garden of Eden -- and the truth behind a mythological ancient culture.