The Step on the Stair by Anna Katharine Green

But when on the following morning I actually found myself riding in the wake of these two and saw Edgar alight with almost a jaunty air before one of the smallest, but most fashionable jeweler shops on the Avenue, I could not but ask myself if my fears had any such foundation as I had supposed. He really did look almost cheerful and walked with a perfectly assured air into the shop.

But he went alone; and when quite some little time had elapsed and he did not reappear, I was ready to brave anything to be sure that all was right. So taking advantage of a little break in the traffic, I ordered my chauffeur to draw up beside the auto waiting at the curb; and when we got abreast of it, I leaned out and asked Clarke, who hastily lowered his window, why he had not gone in with Mr. Bartholomew.