Christopher Mason, 28, was shot and killed on December 24, 2012, in Guilford, North Carolina. His body was found inside a home at 300 Charles Street at about 12:07 a.m. after officers responded to a welfare check. Mason worked as a security guard at Greensboro College and was scheduled to begin a midnight shift just minutes before his body was discovered.

The investigation led to arrests. Frederick Lamar Dee, 28, and Lemiah Wyatt Sanders, 18, were charged with first-degree murder and breaking and entering. Rashun Jacquall Cody, 18, was later arrested and charged with first-degree murder and burglary. All three were held without bond in the Guilford County Jail as authorities continued gathering evidence.

What information about Christopher Mason, his movements that night, or the people involved could help clarify what happened?