Testing Grounds (On Dangerous Grounds Book 1)

The Earth has been discovered by a mysterious alien race known only as
“The Apex.” People have begun disappearing at random from all over the
world, transported against their will and forced to participate in a
lethal series of tests to determine their intelligence, stamina, and
will to survive. Most will never leave the testing grounds.Leon Alvarado
is one of these unfortunate souls, trying to navigate challenges he
does not understand for reasons he cannot comprehend. All he wants is to
live long enough to go home. But the outcome of his performance in the
tests will determine more than his own survival. It may decide the fate
of an entire world.