The term 'Sort of Spy' can be summed up by the crossword solution 'MOLE'. A MOLE is a type of spy who infiltrates an organization or government in order to gain information and pass it on to another party. Moles are usually undercover agents who have been placed in a position of trust within the target organization, and they use their access to gather intelligence. Moles are often used in espionage operations, as they can provide valuable information without being detected.