Over five hours of deliberation Tuesday evening results in a guilty verdict in a Quincy murder case. A nine woman/three man jury found Gavin Masters guilty of first degree murder in the death of Randy Bowser-Smith on July 4. Masters was also found guilty of attempted first degree murder in the shooting and wounding of 21-year-old Skyler Osbourne. The shootings occurred in a residence in the 600 block of College. Sentencing is scheduled for December 23.