sneak thief
pilferer
snitcher

And not through the gate or over the walls with the army behind him, but like a sneak thief?

To Kelly he looked like a sneak thief who had just heard distant sirens.

A spokesman said there had been several raids on homes in the past few days by sneak thieves.

There had been a sneak thief in the hotel across the street.

He felt like a sneak thief, but coming here was the only way to survive.

Then, like a sneak thief in the night, he moved softly to the front door and walked swiftly down the street.

I lived in an attic and was a sneak thief.

You must have taken me for a burglar or a sneak thief.

He'd thought that she was a sneak thief at first.

I never thought I'd say that a sneak thief had done us a favour.

Gimme my coffee, you sneak thief!

Some sneak thief - some hotel servant -" "I beg your pardon," cried the manager hotly.

The guy you want me to catch is a little more than a garden-variety sneak thief, isn't he?

Gordon became known as a pickpocket and sneak thief as a child, becoming so successful he earned the nickname "Waxey" for supposedly being so skilled in picking pockets it was as if his victims' wallets were lined with wax.

Misty Brown An expert sneak thief and burglar, she is caught by Rally and Minnie-May but joins them upon her subsequent release from jail.

Bounty hunter, sneak thief, and all-around scumbag.

What had been the name of that cutpurse and sneak thief with whom he had consorted three or four millennia ago?