Then the irritation suddenly went out of her eyes and she replied cooperatively. "From either Eaton's office or Lathrup's office. I didn't pay much attention to it. It wasn't the only funny sound I've heard around here. When Lathrup—no, I guess I'd better skip it."

"Why, Susan, for Pete's sake?" Lynn asked, smiling a little. "You know I wouldn't repeat it. You've as much right as we have to say what you think. With that graduate major in anthropology you're using as an excuse to spend the summer at a switchboard when you could just as easily—oh, well."

"It's simple work and I like it," Susan replied. "I could spend the summer on Cape Cod and just about squeeze by. But why do it? I like New York in summer and I can use a little extra dough, and I don't feel like secretarying for a stuffy old professor of anthropology. That answer you? When they give out prizes for curiosity—"

"Like Alice in Wonderland, you mean? Curiouser and curiouser. Okay, I plead guilty. I just happen to be interested in people."

"It's forgotten. I forgive you. About that sound—"

"Let me find out for myself. I've gone too far to turn back now. I may as well pull out all the stops and make an absolute fool of myself."

A moment later Lynn was standing before the closed door of Helen Lathrup's private office, wondering if she should knock and announce herself before entering.

She decided not to knock. Either way, Lathrup was sure to be furious and she didn't want to be told to go away.

She took firm hold of the knob and opened the door.

The first thing she saw was the glistening red stain on the floor immediately in front of Lathrup's desk, where blood from the wound in Lathrup's right temple had trickled down over the front of the desk to the floor.