Background Check

noun the circumstances or situation prevailing at a particular time or underlying a particular event

• The candidate has an impressive educational background with multiple degrees in relevant fields.
• I don't know much about her background, but I heard she used to work in finance.
• His background is pretty sketchy, I wouldn't trust him.
• The intricate background of the painting added depth and richness to the overall composition.

adjective describing a process or activity that involves conducting an investigation or research

• The investigative team spent months gathering evidence for the case.
• The detective did some investigative work to solve the mystery.
• I heard the cops are doing some serious investigating on that case.
• Her investigative skills are like a magnifying glass, always uncovering the truth.