Baker's Mark

I was browsing Preditors and Editors today and found a literary agency that looked like a good fit. The only electronic means by which I could submit was a web form that allowed only one sentence. So, I sent the first sentence of my query letter:

The young man only knew himself as Runaway Swimmer, an up-and-coming Cherokee leader, until his surrogate mother, Walking Wind, told him otherwise.

Here's the response I received from the agent:

It is quite possible that you are the first writer who has intrigued me with one sentence. I would very much like to see your manuscript. Could you please send the first 100 pages, with a synopsis, a bio, and a SASE to the mailing address below? I look forward to seeing more from you soon.

All the best,
(name deleted)
Literary Agent

I mean, Holy Cow, man!