dose was in her coffee."
Nina gasped dramatically. "Nicotine can kill just like that." She snapped her fingers. "I've heard of dogs eating nicotine patches and dropping dead."
"Matt said nicotine is more poisonous that arsenic."
"I think it's used as a pesticide," Caroline said, her face pale.
Nina drummed a fingernail on her chin. "Charlie's murder had to be premeditated."
"I hadn't thought of that. You're becoming quite deductive." Gretchen could see a hiker climbing steadily up Camelback Mountain and suddenly wished she were doing the same thing instead of discussing murder.
"Do you think the killer wanted her to die during the parade right in front of all those people?"
"You're the psychic. You tell me."
Nina shrugged and didn't answer. Her aunt's powers short-circuited without any advance warning.
Nimrod flew through his doggie door, ears flapping wildly. He leapt into the pool, paddled in circles, climbed out, and shook water all over the women's legs.
"Watch what I taught him," Nina said, clapping her hands to get his attention. Gretchen knew she was trying to restore a lighter mood. "Come, Nimrod, let's show Momma your new trick." Nina moved her right hand in what must have been a sit command, because Nimrod sat down and dutifully watched her for the next order.
"Smile," Nina commanded.
Nimrod pulled his lips back, exposing his teeth.
"That's a pretty grotesque smile," Gretchen said, giggling.
"He has nice teeth, though," Caroline observed cheerfully, but Gretchen could see tears welling in her eyes from the recent news of the circumstances surrounding her friend's death.
"Good boy." Nina gave him a doggy treat. "We're still working on the smaller details."
"We're still waiting for your secret, Nina," Gretchen said. "Share."
Nina fluffed her hair and cleared her throat, preparing for her stage entrance. "Bonnie, as you know, lives for gossip and spends most of her time tracking it down. She overhead her son speaking on the phone." Nina paused. "I can just see her, slinking around, listening at doors, can't you?"
"And?" Gretchen said.
"He thinks the two deaths are related. Charlie and her sister, Sara."
That was it? The extent of Nina's information? "I already know that," Gretchen said. Nina raised a perfect eyebrow.
"I forgot to tell you. Seriously," Gretchen said. "I wasn't holding out. I forgot."
"You two are way ahead of me," Caroline said, sitting up straight. "Why kill both of them? And why wait a year to murder the second one?"
"The killer will turn out to be a family member," Nina said. "A nut . . . ooh . . . sorry about the unintended pun. You know, nut and all. Anyway, it must be a family member who is crazy and has some knowledge of poisons."
"That person is heartless, brutally so," Caroline said.
"Both women must have suffered terribly before they died. Poor Charlie."
"That was the intent," Nina said. "Don't you think? To make them suffer."
"It appears so," Caroline agreed.
"I'm sure the police are doing everything they can."
Gretchen looked at her mother, worried about her.
"I have more to tell you." Nina leaned forward. "Bonnie has sharp ears. She heard Matt talking about a miniature peanut butter jar."
"Peanuts killed Sara," Caroline said.
"Exactly. Anaphylactic shock," Nina said. "Her entire body went into a serious allergic reaction."
Gretchen was surprised at Nina's knowledge. Her aunt wasn't exactly the medical type.
"I looked it up on the Internet before I came over," Nina said. "Don't look so surprised."
"I'm not," Gretchen fibbed. "Tell me more."
"The peanut isn't actually a true nut. Did you know that?"
Gretchen and Caroline shook their heads.
"It's really a legume, and a ton of people are allergic to it. Some people can have a life-threatening reaction just by inhaling the odor of a peanut."
"You sound like a walking encyclopedia," Caroline said. Nina looked flattered. "See? I'm good for something."
Gretchen stood, leaned over her aunt, and gave her a big hug. "What would we do without you?"
"I ask myself that every day."
"Where did Matt find the miniature peanut butter jar?"
Gretchen asked.
"I thought you'd never ask," said Nina. "Brace yourself." She paused for effect, her jeweled fingers fluttering.
"The police found the little jar under Charlie's dead body."
Gretchen stared at her.
"Maybe the killer is leaving a calling card," Nina hypothesized. "Or he wants to be caught."
"Gretchen, dear daughter," Caroline said. "Matt might be right. It could be very dangerous to go there."
"Both sisters are dead," Gretchen reasoned. "There's no reason to believe anyone else will die."
"Maybe the brother killed them?" Nina suggested.
"Not likely," Caroline said. "He has serious health problems. Charlie had a son, but they were estranged. I wonder if he knows about his mother's death."