Pacific Blue is an American crime drama series about a team of police officers with the Santa Monica Police Department who patrolled its beaches on bicycles. The show ran for five seasons on the USA Network, from March 2, 1996, to April 9, 2000, with a total of 101 episodes. Often described as "Baywatch on bikes", the series was run in many other markets, including Austria, Belgium, Bulgaria, Canada, Denmark, Egypt, France, Germany, Hungary, Israel, Italy, Lebanon, Norway, Poland, Russia, Spain, South America, Sweden, and Zimbabwe.
The first cast change came at the end of the first season when David Lander, who played the Pacific Blue unit's bike repairman, was written out, though he would later return for several guest appearances in the second season. The series then underwent cast changes between the third and fourth seasons, which dramatically altered its tone. The events of the third-season finale brought the departure of actors Marcos Ferraez and Rick Rossovich, with their characters retiring from the force prior to the fourth season premiere. Ferraez would later return for a one-off guest appearance during the fourth season to wrap up his character's storyline. The fourth season premiere brought four major cast additions: Shanna Moakler as Monica Harper, Amy Hunter as Jamie Strickland, Jeff Stearns as Russ Granger, and Mario Lopez as Bobby Cruz. These new recruits to the Pacific Blue unit skewed the show's cast in a younger direction.