Gumshoe Meaning in Bengali

What is the meaning of word Gumshoe in Bengali/Bangla ?

Meaning of Gumshoe in Bangla is : গোপনে কৃতকর্ম

Defenition of word Gumshoe

Example

he'd been intrigued enough to put a gumshoe on the case

Other Meaning of Gumshoe