Awww yeah, business be picking up! Its only gonna get darker folks
You got ahold of the shell casing. It is a 9x 19mm Parabellum. Common enough that even with your more day to day knowledge of pistols you could figure it out. What might comes to mind for you since you are an archeologist is the Latin Roots for the name Parabellum; derived from a phrase that means "If you seek peace, prepare for war."
@Lady Amalthea Post is edited again sorry I didn't even see the tag in DJ's post. :(