It was such a short e-mail I was sure it was going to say, "Thanks, but in today's market..."
Instead, it said, "I'm really enjoying [the book]... You're a fine writer... So please send the rest."
OMG. I try not to get too excited about these things. But, you know, the bad news has been so frequent, and the good news so...non-existent. And this is a real agent with a reputation in the mystery/thriller genres.
Of course, the cynic in me thinks, the only other time a partial led to a full request was from the Nice Agent Lady, and we all know what happened there.
Still... "I'm really enjoying... You're a fine writer..."