Numb3rs: The Fifth Man

"The Fifth Man" is the 20th episode of the fifth season of the American television show Numb3rs. In the episode, Federal Bureau of Investigation (FBI) agents and mathematicians attempt to find a group of home invaders while dealing with the injury of the agents' boss. For FBI Special Agent David Sinclair (Alimi Ballard), the case is his first as team leader. The art department built a new office for Dr. Charlie Eppes (David Krumholtz), which reflected his own professional growth within academia. Brought in several times before to audition for various guest appearances, Debbon Ayer, Rob Morrow's real-life wife, guest-starred as the victim of a home invasion. "The Fifth Man" first aired in the United States on April 24, 2009. Critics gave the episode positive reviews.