When Washington Post journalist Jamal Khashoggi disappears after entering Saudi Arabia’s consulate in Istanbul, his fiancée and dissidents around the world are left to piece together the clues to a brutal murder and expose a global cover up perpetrated by the very country he loved.

Journalist Dana Priest traces the battle against terrorism in the United States, from Sept. 11 to the April 15, 2013 bombings at the Boston Marathon.