An attorney for Anthony Sanborn, whose post-conviction review is scheduled for next week, is arguing that Jessica Briggs’ murder was the work of a serial killer, but prosecutors say that argument is speculation.

Henry A. Eichman, a former employee at St. John’s Catholic School in Brunswick, faces a total of 20 counts of child sexual abuse in two counties.

Stephanie Knightly faced a possible 10-year sentence, but her lawyer says she had no idea what Steven R. Piirainen, who died in the shootout, planned to do with the weapon.