And Executioner | [s4e11] Judge, Jury

: Roger Thorson , the mock trial advisor and an old law school friend of the judge, was revealed as the murderer. He killed her to prevent her from exposing his involvement in the private prison scheme.

Aside from the murder case, this episode also features a subplot where discovers her mother, Angela , owes $27,000 in back taxes due to her father's negligence. [S4E11] Judge, Jury and Executioner

: The judge had discovered that a private prison, to which she had been sending young offenders for rehabilitation, was actually a dangerous facility for "hard-core gangbangers". : Roger Thorson , the mock trial advisor

In of Rizzoli & Isles , titled " Judge, Jury and Executioner ," the "piece" of evidence that proves critical to solving the case is a dab of wet paint . : The judge had discovered that a private

"Rizzoli & Isles" Judge, Jury and Executioner (TV Episode 2013)

: A small amount of wet paint on the judge's hand leads detectives to a freshly painted railing in a stairwell, identifying the exact location where she was ambushed.