I had reason to wish assurance in these matters.

I had to present you to my friends." "Yet this very knowledge of my social position placed me on a totally different plane from that of a detective picked up at some agency.

You knew I was not serving you for pay." "Did I ?" "I should hope you did," his voice hardening slightly.
"But for what other end did you volunteer your services ?" "Perhaps that is not so easily explained.

It was a spirit of adventure which first led me to answer your advertisement, I presume.

At least, I can give it no other name.