“Now that this is over, I can start my life again,” she said in an interview. “Last year, I spent Thanksgiving inside a jail cell. Jerry told so many lies, and I was imprisoned because authorities had decided to believe him. But I am not bitter. The truth won out in the end.”

As the guilty verdict was announced, Mr. Ramrattan, 39, who had muttered at the prosecution witnesses and smiled at the jury during the trial, sat quietly, staring ahead. Outside the courtroom, Ms. Sumasar’s family leapt in joy.

Prosecutors told the jury that Mr. Ramrattan hatched the scheme after Ms. Sumasar, a former restaurant owner and analyst with Morgan Stanley, refused to drop rape charges against him. They said he intimidated and cajoled false witnesses into telling the authorities that she had dressed as a police officer and robbed them at gunpoint.

While jailed for seven months, until last December, Ms. Sumasar was separated from her young daughter. She lost her restaurant, and her house in Far Rockaway, Queens, went into foreclosure. Her bail was set at $1 million, which she could not afford. Meanwhile, Mr. Ramrattan walked free until an informer came forward and exposed his ruse.