Airs Sunday May 10th at 10/9c only on USA Network. When a huge building collapse traps one of Mary's witnesses under the rubble and out in the open, his injury plays second to the threat of a professional assassin up on the roofs. Become a fan on Facebook: http://www.facebook.com/inplainsite and visit the official website at http://ips.usanetwork.com for games and sweepstakes!