The con artist was as slippery as an eel, making it hard for the police to catch him.
Аферист был скользким как угорь, из-за чего полиции было трудно поймать его.
Definitions
Very difficult to catch, hold, or pin down, either physically or metaphorically; often used to describe someone who is elusive, evasive, or hard to get a clear answer from.