Filming for the NBC television show “The Enemy Within” took place in Essex County’s Branch Brook Park Wednesday.
The park was closed until around 4 p.m. from Clinton Avenue to Bloomfield Avenue, creating some traffic issues.
“The Enemy Within” previously filmed scenes in Paterson and Cresskill.
The show stars Jennifer Carpenter as a former CIA operative-turned-American traitor and Morris Chestnut as an FBI agent working to track down a dangerous criminal.
It is set to debut in the spring of 2019.