When FBI Special Agent and former MARSOC operator Daniel Porter finishes a raid on a suspected terror cell, he thinks the case is closed. But after the dust settles, he discovers that his team missed a key piece to the puzzle.

 

Following the trail to a destination 250 miles above Earth, he begins to unravel an alarming plot: a private astronaut onboard a commercial space station is preparing to load a bio-engineered pathogen, disguised as a science experiment, onto an Earth-bound cargo vehicle. But, as the time to undock inches forward, Agent Porter's investigation is inexplicably blocked.

 

With less than 24 hours remaining, he must find the truth before an unwitting recovery technician becomes patient zero for the most terrifying pandemic in history.