Some instinct had warned her that would be the wrong thing to do.

Some instinct warned her to keep that information to herself.

Some instinct warned him that something was out of place.

And no instinct warned me that I should never look upon him again in this world!

But instinct warned her that this was not the right opportunity.

The sounds died, but instinct warned him that he was not alone.

Every instinct warned him not to risk letting this happen.

But apparently some instinct warned her to put on shoes, which she tried to do.

Instinct warned him to keep a wall of indifference between them.

He crawled about upon the floor, feeling with his hands for the thing that instinct warned him was gone.