The Lust Lizard of Melancholy Cove

was following Gabe across the restaurant and a bolt of anxiety shot up her spine. This definitely isn't a date.
    Gabe smiled and the lines around his eyes crinkled as if he were about to burst out laughing. He extended his hand to her. "Hi, I hope you don't mind, I asked Theo to join us." His hair was combed, as was his beard, and he was wearing a faded but clean chambray shirt.Not exactly dashing, but a pretty good-looking guy in a lumberjack sort of way.
    "No, please," Val said. "Sit down, Theo."
    Theo nodded and pulled a chair up to the table, which had been set for two. The waitress breezed in with another place setting before they were seated. "I'm sorry to intrude," Theo said, "but Gabe insisted."
    "No, really, you're welcome, Constable."
    "Theo, please."
    "Theo then," Val said. She forced a smile. What now? The last time she had talked to this man it had thrown her life for a loop. She found herself building a resentment for Gabe that was usually reserved for relationships that were years old.
    Theo cleared his throat. "Uh, can we go on the doctor-patient confidentiality plan again, Doctor?"
    Val nodded to Gabe, "That usually implies a session. Not dinner."
    "Okay, then, don't say anything, but Joseph Leander killed his wife."
    Val didn't say, "Wow." Almost but she didn't. "And you know this because-"
    "Because he told me so," Theo said. "He gave her tea made from foxglove. Evidently, it can cause heart failure and is almost undetectable. Then he hung her in the dining room."
    "So you've arrested him?"
    "No, I don't know where he is."
    "But you've put a warrant out for his arrest or whatever it is that you do?"
    "No, I'm not sure that I'm still the constable."
    Gabe broke in. "We've been talking about it, Val. I say that Theo is an elected official, and therefore the only way he can lose his job is through impeachment, even if his immediate superior tries to kill him.
    What do you think?"
    "Kill him?"
    "Smooth," Theo said, grinning at Gabe.
    "Oh, maybe you should tell her about the crank lab and stuff, Theo."
    And so Theo explained, telling the story of his kidnapping, the drug lab, Joseph Leander's disappearance, and Molly Michon setting him free, but leaving out any theories he had about a giant creature. During the telling, they ordered (fried chicken for Theo and Gabe, a Greek salad for Val) and were halfway through dinner before Theo stopped talking.
    Val stared at her salad and silence washed over the table. If there was going to be a murder investigation, she could be found out. And if they found out what she had done to her patients, her career was over. She might even go to jail. It wasn'tfair, she really had tried to do the right thing for once. She resisted the urge to blurt out a confession – to throwherself on the mercy of a court born of sheer paranoia. Instead she raised her eyes to Gabe, who took the signal to break the silence.
    Gabe said, "And I still don't know the significance of the low serotonin levels in the rats' brains."
    "Huh?" said not only Val and Theo, but the waitress, Jenny, who had been eavesdropping from the next table and joined the confusion at Gabe's non sequitur.
    "Sorry," Gabe said to Val. "I thought you might have a take on the brain chemistry of those rats I had tested. You said you were interested."
    "And I am," Val said, lying through her teeth, "but I'm a little overwhelmed by the news about Bess Leander."
    "Right, anyway, the group of rats that didn't take part in the mass migration all had unusually low levels of serotonin. The brain chemistry of the larger group, the group that ran, was all in normal ranges. So I'm thinking that…"
    "They were depressed," Val said.
    "Pardon me?" Gabe said.
    "Of course they're depressed, they're rats," Theo said.
    Gabe glared at him.
    "Well, imagine waking up to that every morning," Theo continued. "'Oh, it's a great day, crap, I'm still a rat.Never mind.'"
    "Well, I don't know about rats," Val said, "but serotonin levels in humans affect a lot of different things, predominantly mood. Low levels of serotonin can indicate depression. That's how Prozac works.
    It basically keeps serotonin in the brain to keep the patient from getting depressed. So maybe Gabe's rats were too depressed to run."
    Gabe stroked his beard. "I never thought of that. But it doesn't help that much. It doesn't tell me why the majority of the rats did run."
    "Well, duh, Gabe," Theo said. "It's the fricking monster."
    "What?" Val said.
    "What?" said Jenny, who