adult agent alone approach backdoor background backlit black business cartoon close closing concept crime detective dim dimly doom doorway dream entrance eye fbi fear fright frightening gangster hat hitman illustration interrogate interrogation investigator lamp lightbulb lit loathing looking mafia male man metaphor mob mobster mystery nightmare noir one person police poor private raincoat ray scared secret shut shut-out silhouette spy strange stuck suspect suspicion torture trench-coat trenchcoat undercover unknown