India, Aug. 6 -- NBC is set to expand its primetime drama lineup with Line of Fire, a new action thriller that combines family relationships with high stakes law enforcement missions. The series premieres on September 21 and follows a family navigating dangerous investigations while confronting personal conflicts.

Family at the Heart of a Dangerous Mission

Created by Josh Safran, Line of Fire revolves around a family of law enforcement officers serving across the FBI, the US Marshals, the Secret Service and the Department of Justice. What begins as a routine investigation soon develops into a deadly conspiracy, forcing the family to rely on their combined expertise while facing difficult personal and professional choices.

Inspired by Per...