Maybe Train Undercover Agent

• a rester who is sleeping

• a spy or saboteur or terrorist planted in an enemy country who lives there as a law-abiding citizen until activated by a prearranged signal

• an unexpected achiever of success

• one of the cross braces that support the rails on a railway track

• a passenger car that has berths for sleeping

• pajamas with feet; worn by children

• a piece of furniture that can be opened up into a bed

• tropical fish that resembles a goby and rests quietly on the bottom in shallow water

• an unexpected hit

• (military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors

• a secret watcher; someone who secretly watches other people

• catch sight of

• watch, observe, or inquire secretly

• catch sight of; to perceive with the eyes

• secretly collect sensitive or classified information; engage in espionage

• spicy sauce often containing chocolate

• the molecular weight of a substance expressed in grams; the basic unit of amount of substance adopted under the Systeme International d'Unites

• a spy who works against enemy espionage

• a small congenital pigmented spot on the skin

• a protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away

• small velvety-furred burrowing mammal having small eyes and fossorial forefeet