From the one-way mirror, Lindsay looked into the interrogation room both confused and angered. She couldn't believe what she was seeing.
Sitting across Mac was Abby Gelman.
"You got us worried" Mac started.
"I'm alive and well" Abby answered.
"Can't say the same for Gwen DiCarlo though" Mac said as he produced the photo of Gwen's dead body. "You never intended to kill her"
"Fiona" Abby said as she shook her head.
"Convenient to blame a dead woman" Mac said.
"Fiona's always had a simple mind" Abby said "I told her to give Gwen 5mg of morphine to calm her down. I didn't know that every time, she would give her 50mg instead of 5." Abby sighed. "Fiona was my biggest fan"
"You love being surrounded by your fans" Mac said. "That's why you had your publisher Bantam Books pay for Yi Yin Zhou's scholarship"
"Rosie gave me up, didn't she" Abby said "Did her a favor by plucking her out of Singapore and this is the thanks I get".
"Actually, you gave yourself up" Mac said. "You wouldn't have been caught if you didn't switch Rosie Cheung's order to cremate the body"
Abby just nodded.
From behind the one-way mirror, Danny joins Lindsay. He puts her hand around her shoulder. She was trembling.
"Why did she do this?" Lindsay said.
"Fiona was your friend" Mac seemed to answer Lindsay's question. He takes out another file folder. "When Fiona Albright was attacked by a bear, she was found half dead by Gavin Westmont. Your grandfather. Who you were visiting that weekend."
Abby started to cry. "I couldn't believe what happened to her. Had the bear hit her another three centimeters to the right, it would have blinded her" Abby looked up to Mac "I know Gwen and Lindsay had tricked her. But she was out there in the woods to impress me. She risked her life so I would notice her"
"Why did you do all this?" Mac said "Such an elaborate set up to get back at Gwen and Lindsay."
"I never meant to hurt Gwen. Or Lindsay" Abby said. "I just wanted to rattle them, give them a taste of what they did"
"And sell a few books in the process? You based the whole thing on Cross Country" Mac said.
"It was my ultimate gift to Fiona" Abby said. She looked at the one-way mirror. Like she was talking to Lindsay.
"Fiona's favorite book was 'And Then There Were None' by Agatha Christie" Abby said. "Ten people on an island, dying one after another. They didn't know the killer was among them"
"Lawrence Wargrave, the judge was the killer. He was dying of cancer. Just like Fiona" Mac said.
"Fiona is 32 years old" Abby said "She sells flasks and test tubes at a chemical supplies store. She spends her holidays alone in her home. During her chemo, she had a total of two visitors --- me and Rosie. She hasn't even had her first kiss"
Abby looked back at the one-way mirror. Behind it, Lindsay was already crying.
"I couldn't let her die like that. I couldn't let her die in a mediocre life" Abby said.
"So you turned her into a serial killer" Mac said.
"It was her dying wish" Abby said.