Which phrase from "The Oblong Box" is used figuratively to mean "right in front of me"?

It was the first time I had ever known Wyatt to keep from me any of his artistical secrets; but here he evidently intended to steal a march upon me, and smuggle a fine picture to New York, under my very nose; expecting me to know nothing of the matter. I resolved to quiz him WELL, now and hereafter.