Accusations of sexual misconduct had swirled around the film producer Harvey Weinstein in New York and Los Angeles long before he was on trial in Manhattan.

Here is a timeline of events in Mr. Weinstein’s journey toward a verdict.

March 27, 2015

Prosecutors in Manhattan declined to prosecute Mr. Weinstein.

Ambra Battilana, an Italian model, told the New York City police that Mr. Weinstein groped her breasts during a business meeting at his office in Manhattan’s TriBeCa neighborhood. The next day, working with investigators, Ms. Battilana visited Mr. Weinstein at the TriBeCa Grand Hotel and secretly recorded him apologizing for the encounter.

But after a two-week investigation by sex-crimes prosecutors, the Manhattan district attorney, Cyrus R. Vance Jr., announced that the evidence did not support charging Mr. Weinstein with forcible touching, a misdemeanor.

August 2017

Mr. Weinstein hired investigators to learn who was talking to reporters.

As reports began to circulate that journalists were looking into allegations that Mr. Weinstein mistreated scores of women over decades, the producer hired a private intelligence firm, Black Cube, to investigate what he described as “red flags” — or people who he suspected were talking about him to reporters.