A 27-year-old woman, who described herself as a drug addicted prostitute at the time, says the defendant in a Janesville murder case, admitted the killing to her.  Nicole Kazar testified in Rock County Court Tuesday morning, 24-year-old Julian Dewayne Collazo told her, he’d killed 43-year-old Christine Scaccia-Lubeck, as the pair were driving the victim’s stolen car to Missouri in 2017.  Scaccia-Lubeck was found stabbed to death in her home that December.  This is the second time Collazo is facing a jury in the case.  A mistrial was declared two years ago due to a toxic jury.