Karen Read pleaded not guilty to murder charges in the death of Boston police officer John O’Keefe and is facing a retrial after a jury was unable to reach a verdict last year. The trial is entering its second week as the prosecution continues to call key witnesses.

Testimony at Karen Read's trial Monday focused on Jen McCabe's "how long to die in cold" Google search and John O'Keefe's movements before defense witnesses with questioned without jurors present.

The jury is expected to hear a half day of witness testimony on Monday. Jurors will be sent home at lunch to facilitate a voir dire hearing for two accident reconstruction experts testifying for Read’s defense.