Jolie plays Pearl's wife, Mariane, and the role of the Wall Street Journal reporter beheaded in Pakistan is played by Dan Futterman, best known for "Judging Amy," in which he played the judge's struggling writer brother, and for his Oscar-nominated screenplay, "Capote."
The film, "A Mighty Heart," is co-produced by Plan B, a production company founded by Jolie's husband, Brad Pitt, and his ex-wife, actress Jennifer Aniston. Other films produced by Plan B include Martin Scorsese's "The Departed" and "Charlie and the Chocolate Factory" starring Johnny Depp.
Jolie and Pitt, accompanied by their three children — 5-year-old Maddox, 18-month-old Zahara, and 5-month-old Shiloh Nouvel — arrived in Mumbai on Saturday from Pune in the western Indian, where they had been shooting the movie for nearly a month.
In Mumbai Monday, Jolie, in a pale blue T-shirt and khaki pants, stood in line to purchase a ticket. Then Jolie and Futterman, also casually dressed, in jeans and a white shirt, boarded a train.
They were escorted by bodyguards who held back young students yelling Jolie's name. Curious onlookers collected outside the train station to catch a glimpse of Jolie.
Street scenes were also filmed of Jolie and Futterman walking near the Gateway of India, a popular tourist destination in downtown Mumbai. The movie stars then acted in scenes inside a hair salon and a restaurant.
Earlier over the weekend, Jolie and Pitt took their children sightseeing. Leading newspapers published pictures of son Maddox perched on Pitt's shoulders and Jolie carrying daughter Zahara as they stepped out of their luxury hotel on Sunday.
They visited a popular Mumbai restaurant where Pearl often played violin or mandolin with a group of friends.
Much of the film has been done on location in Pune, India, because of the city's resemblance to Karachi, Pakistan, the city where Pearl was abducted and killed.
The movie is based on an adaptation of Mariane Pearl's book, "A Mighty Heart: The Brave Life and Death of My Husband, Danny Pearl."