Alex Cross Must DieBy: James Patterson Series: Alex Cross NOW THE INSPIRATION FOR THE ORIGINAL SERIES 'CROSS' ON PRIME VIDEO TWO KILLERS. TWO MOTIVES. A DEADLY RACE AGAINST TIME. When an American Airlines plane explodes in the sky, detectives Alex Cross and John Sampson are first on the scene. They don't hear the gunfire. At first. It soon becomes clear that the plane was taken down by a rare, stolen machine gun. The list of people who could operate the weapon is short.