The case out of Dedham, Massachusetts, has turned into a yearslong whodunnit legal saga that has captivated true-crime fans across the country.

Dedham Superior Court officials blame ‘unavoidable circumstances’ for the cancellation in testimony in the sensational retrial of Read in Massachusetts, which is in its fourth week

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.

Yuri Bukhenik, a Massachusetts State Police trooper, read dozens of text messages between Karen Read and Brian Higgins, an ATF agent.

Yuri Bukhenik, a key investigator in the Karen Read case, finished his testimony after three tense days on the witness stand. WBZ-TV's Kristina Rex reports.

Witness testimony resumes for a 12th day Thursday in the Karen Read trial as proceedings remain ahead of schedule. Read told reporters a day earlier that the prosecution's case is nearing an end. You can watch testimony live on CBS News Boston when it begins at 9 a.m. by clicking on the video player above.

The Karen Read trial is not taking place on Tuesday due to "unavoidable circumstances," a court spokesperson said in an email.

Bukhenik says he never considered Higgins to be a suspect because of the “totality of evidence” he says State Police have that point to Karen Read killing O’Keefe.

Witness testimony in the second trial of Karen Read will not occur on May 13 as expected, a court spokesperson said.

Massachusetts State Police Sgt. Yuri Bukhenik testifies in a case involving Karen Read, who is accused of hitting her boyfriend with an SUV and leaving him to die.

A number of key witnesses have not taken the stand in the high-profile case, on topics ranging from DNA evidence to data from Read’s car.