thief in the night

A person or thing that moves in a swift and secretive, stealthy, or surreptitious manner. The cancer spread through my lungs and into my bones like a thief in the night, giving me no chance of beating it.

Common Names:

Name	Pronounced	Usage
Yamanu	-	Egyptian Mythology
Hrodebert	-	Ancient Germanic
Tristin	TRIS-tin	English (Modern)
Esi	-	Western African, Akan
Momi	-	Hawaiian
Fiacre	-	French