Dr. G: Medical Examiner - Season 5 Episode 6 Twin Terror

A 69-year-old man with a gunshot wound to the back of the head is found slumped over the rail of a footbridge. A gun is found in found in a holster on the man's waist, and Dr. G finds multiple clues indicating that the man had fired his own gun prior to his death. Could the man have shot himself in the back of the head, or was he murdered?A 23-year-old man is found dead in his bed and covered in vomit after a night of heavy drinking. The decedent's mother reveals that the man took a prescription anxiety medication, and Dr. G suspects that the combination of the anxiety medication and the alcohol may have produced a deadly result. Will Dr. G's hypothesis prove correct?