In the year 2001, a pivotal change occurs at The Boston Globe as they bring in a new editor, Marty Baron. Baron first encounters Walter "Robby" Robinson, the experienced editor of the Spotlight team, a small but dedicated group of journalists focusing on in-depth investigative reports that require extensive research and time. Robby reveals that their work falls under the oversight of Ben Bradlee Jr. (John Slattery), who has shown unwavering support for their efforts thus far.
Baron becomes intrigued after reading a column discussing lawyer Mitchell Garabedian, who asserts that Cardinal Law, the Archbishop of Boston, was aware of the predatory actions of priest John Geoghan and failed to intervene. Driven by this serious allegation, Baron urges the Spotlight team to thoroughly investigate this matter. He reaches out to the district attorney to discuss lifting restrictions on several documents that could potentially prove the Cardinal's long-standing knowledge of systemic abuse by priests.
As they delve deeper, Robby and his colleague Sacha Pfeiffer consult with the company lawyer, Eric Macleish. Macleish warns them that sexual abuse cases often face a short statute of limitations, typically three years, with most victims reluctant to come forward for years after the incidents. He explains that the damages for these cases are often capped at $20,000, leaving the media as the primary means for victims to share their stories. However, Macleish expresses doubt about Garabedian's case against Cardinal Law and mentions that most of his 80 plaintiffs aren't cooperating.
Michael Rezendes, another journalist on the Spotlight team, makes a move to contact Garabedian, who initially dismisses the request for an interview. Yet, through clever persuasion and revealing his position on the Spotlight team, Rezendes convinces Garabedian to come forward.
Throughout their investigation, subtle undercurrents suggest that many people hesitate to cooperate with the Spotlight team, fearing that Baron, as a Jewish editor without a family, might have an anti-Catholic agenda driving their inquiry. Initially convinced that they are tracking the movements of a single miscreant priest, the Spotlight team soon uncovers a disturbing pattern of widespread sexual abuse perpetrated by Catholic priests across Massachusetts, consistent cover-ups facilitated by the Boston Archdiocese, and an alarming number of victims who have been silenced. Their inquiry is expanded thanks to insights from Paul Saviano, who leads a victims' rights organization, allowing them to broaden their focus to thirteen priests involved in these heinous acts.
As Robby shares his discoveries with Ben, he is advised to overlook Saviano’s input. Defying this, Robby instructs his team to push ahead and investigate all leads without compromise. Their probing leads them to more victims who reveal that Saviano directed them to Macleish, who, in turn, had discouraged them from taking legal action. Eventually, they discover that all settlements between the church and victims were conducted in secrecy and that the church had continuously assured the public that offending priests had been removed from service without any follow-up or accountability—a gross misrepresentation of the truth.
Armed with information from an ex-priest who attempted to rehabilitate those guilty of abuse, the Spotlight team learns that Boston alone harbors approximately ninety such predators. Their research leads to a list of eighty-seven names, and they embark on a mission to locate the victims who might corroborate their findings.
Yet, when Robby and Sacha confront Macleish again for a list of priests, tensions rise. Robby aggressively elicits crucial information from Eric, who eventually reveals a buried list of 45 priests associated with settlements. Just as their momentum builds, the events of September 11 disrupt their work, temporarily stalling their progress. However, they regain their focus after Rezendes uncovers publicly accessible documents confirming Cardinal Law’s knowledge of the abuse and his failure to act.
As the Spotlight team finally gains access to additional legal documents, they are poised to publish their groundbreaking findings in early 2002. In a moment of reflection, Robinson admits that he had previously received a list of twenty pedophile priests back in 1993—information that was never acted upon. Regardless, Baron reaffirms the significance of their work. When the articles go to print, they include a call for victims to come forward, leading to a surge of phone calls from those ready to recount their harrowing experiences.
The film concludes by revealing the extensive range of locations in the U.S. and globally where such abuses have been concealed. By December 2002, the Spotlight team achieves a remarkable feat, publishing 600 stories of abuse linked to 249 priests in Boston alone. Cardinal Law’s resignation comes in December 2002, but he is reassigned to a prestigious position in Rome, highlighting the deep-seated issues within the institution he once led.
