“All data is useful in this case,” said Dimitri. “Especially since we haven’t found anything so far. We know there’s something different about former Strigoi. We can’t rule out any chance to observe it.”

Adrian’s lips tightened, and he made no further protest. Maybe it was because he felt overruled, but I had a feeling it was because he just didn’t want to engage with Dimitri.

With the attention off me, I settled into the living room with a book and tried to stay awake. They didn’t need me. I’d simply come to keep Eddie company. Occasionally, I’d check the others’ progress. Dimitri and Eddie watched as Sonya flipped through different images on her laptop. In turn, Adrian and Sonya watched the dhampirs closely and made notes on paper. I almost wished I could see the bands of color and light and wondered if there really were any noticeable differences. Studying Eddie and Dimitri, I sometimes would notice a change in facial expression when particularly cute or horrific images showed up on the screen, but for the most part their work remained a mystery to me.

Curious, I walked over to Sonya when they were about halfway through. “What do you see?” I asked in a low voice.

“Colors,” she said. “Shining around all living things. Eddie and Dimitri have different colors, but they have the same reactions.” She changed the picture on the screen to one of a factory spilling black smoke into an otherwise clear sky. “Neither of them like this. Their auras dim and turn troubled.” She flipped to the next image, a smile on her lips. Three kittens appeared on the screen. “And now they warm up. Affection is very easy to spot in an aura. So far, they react in normal ways. There’s no sign in Dimitri’s aura that he’s different from Eddie.” I returned to the couch.

After a couple of hours, Sonya called a halt. “I think we’ve seen what we needed to. Thank you, Eddie.”

“Happy to help,” he said, rising from his chair and stretching. He seemed relieved both that it was over and that it had involved something slightly more interesting than staring off into space. He was active and energetic, and didn’t like captivity.

“Although… we’ve got a few other ideas,” she added. “Do you think you guys can power through a little longer?” Naturally, she asked just as I was yawning.

Eddie regarded me with sympathy. “I’ll stay, but you don’t have to. Go sleep. I’ll get a ride home.”

“No, no,” I said, stifling a second yawn. “I don’t mind. What are your other ideas?”

“I was hoping to do something similar with Eddie and Dimitri,” she explained. “Except this time, we’d use sounds instead of images. Then I’d like to see how they respond to direct contact with spirit.”

“I think that’s a good idea,” I said, not really sure what that last one would entail. “Go for it. I’ll wait.”

Sonya glanced around and seemed to notice I wasn’t the only one who looked tired. “Maybe we should get some food first.” Eddie brightened up at that.