Only episode of the series to be directed by one of the Scott brothers.
Trust Metric (2007) is directed by Tony Scott, reuniting him with his Top Gun (1986) star, Val Kilmer.
Brothers Ridley Scott and Tony Scott produced Numb3rs (2005); its production companies are the Scott brothers' Scott Free Productions and CBS Television Studios (originally Paramount Network Television, and later CBS Paramount Network Television).
The season premiere, Trust Metric (2007), aired on September 28, 2007, in the same time slot as in previous seasons, 10:00 pm Eastern Time. Because of the writer's strike, only 12 episodes were initially produced. However, once the strike ended, CBS announced the show's return April 4, 2008, with six episodes. The season ended on May 16, 2008.
Aired on Naomi Watts' (1968), Mike Johansen's (1968), Moon Unit Zappa's (1967), Sylvia Kristel (1952) Janet Munro's (1934), Brigitte Bardot's (1934) Ed Sullivan's(1901), and Confucius' (-551) birthday
--- Aired on the anniversary of the death of Cathriona White and Harpo Marx.