Popstar Jennifer was seen filming on location in New York City on Monday (15 June) alongside co-star Ray Liotta.
The 45-year-old had two outfit changes for her scene, and during a break she hopped in the director's chair while speaking to filmmaker Barry Levinson.
The crime drama follows a tight-knit crew of police officers who keep the streets safe but are corrupt when it comes to protecting their own.
Jennifer plays single mother, Harlee McCord, who is working undercover for the FBI's anti-corruption force, but she faces the dilemma of her own family's welfare and that of her police family.
Jennifer's role in the drama, which is executive produced by Ryan Seacrest, was announced in February.
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