A curious thing happened as we entered the house. I shot a quick glance at Zack, who frowned at me and tilted his head. He’d smelled it, too. Emotions have a scent—more of a feel, I guess, a combination of the sound of breath, heartbeat, and body secretions. Nervous sweat, aroused sweat, and exercise sweat are composed of different substances. They have an intensity, too. Outside on the porch, Rick had been aroused by Lisa and angry at our intrusion—and a variety of other things. He’d been intense. As soon as we came inside the house, everything muted. It might have been some effect of being
  
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