Nicholas Guarino

Nicholas Guarino is a Massachusetts State Police detective who played a key role in the trial of Karen Read, testifying about cellular phone logs and text messages exchanged between Read and her boyfriend, John O'Keefe, prior to his death. His testimony aimed to provide insights into the dynamics of their relationship and the events leading up to the tragic incident, contributing to the prosecution's case against Read, who is facing murder charges in connection with O'Keefe's death.