Nicole Pearce has pleaded guilty to murder days into jury selection and nearly four years after the deaths of Tim and Kim Donnelly.

Pearce pleaded guilty to two counts of felony murder. She faces up to 50 years in prison, but could see a reduced sentence if she agrees to testify against her co-defendant, Chris DiMeo.

Pearce's lawyer says she is likely to testify.

The Donnellys were murdered inside the Fairfield jewelry store they owned in February 2005. Police say Pearce wasn't at the store at the time of the robbery and killings, but rather scoped the place out beforehand.

Pearce's sentencing won't take place until after her co-defendant's trial. Her time will be served at the same time she serves for another robbery-murder she and DiMeo plead guilty to on Long Island.

Man accused of killing Fairfield couple appears in court