At the door of his laboratory, he stopped and called to the Mick who was sneaking upstairs.

When you sneak upstairs, get through to the garage first thing.

He imagined Patrick pulling up worms from the tank and sneaking upstairs with them.

He intended to sneak upstairs at the first quiet opportunity.

Jack Frost tiptoed in, obviously hoping to sneak upstairs to the party without being noticed.

After the couple were asleep in their own room it would be safe for me to sneak upstairs.

Tony's visitors had come into the joint as customers, then sneaked upstairs.

Belbo went to the office, sneaking upstairs like a thief, and locked himself in his room.

Rusty and I, sneaking upstairs, were venturing into taboo territory.

I'll sneak upstairs to their offices and just "lie low" as they say until Monday morning.