Cloak-and-dagger type is a term used to describe a SPY, someone who works in secret and often engages in espionage. This type of SPY is usually associated with espionage activities during wartime or other times of conflict. They often use disguises and other tactics to remain undetected while gathering information. The term 'cloak-and-dagger' comes from the idea of a SPY using a cloak to hide their identity and a dagger to threaten or intimidate their enemies.