http://www.cbs.com/primetime/numb3rs/video/video.php?cid=446410306&pid=aIwR_g4_LCivoun8OCY4JbsGhdL1UlFV&play=true&cc=0
If the link doesn't work, go to CBS.com, select the NUMB3RS show and then episode is "Atomic No. 33."