Text messages between defendant Karen Read and ATF agent Brian Higgins are essential to understanding the theories behind both the prosecution and defense’s case.  Read all of them here.

The prosecution and defense offered vastly different facts and theories as Karen Read's second murder trial got underway Tuesday.

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.

Jurors sitting on the high-profile case became privy to a slew of text message exchanges that showed a flirtation between the woman charged with killing her boyfriend and an ATF agent who was a friend of the dead man,

Karen Read’s defense attorney Alan Jackson on Wednesday continued to lay the foundation for the theory of a conspiracy that pitted “close-knit” Canton locals against an outsider

Prosecutors in Karen Read’s second murder trial attempted to build on earlier testimony from Jennifer McCabe, who overheard Read say she hit her Boston police officer boyfriend.