The rest of the journal.
She read it twice, slowly, on Sunday and again Monday morning before school. By the second reading she had started a list of her own, not in the journal itself but in a notes app on her phone, tracking the specific things Sienna had documented about each person and what those things might mean.
The picture that assembled itself was both simpler and more disturbing than Ava had expected.
Sienna had been blackmailing Caleb. Not dramatically, not with explicit demands written down anywhere, but the shape of it was unmistakable in the journal: references to an arrangement, to what he owed her, to the fact that he had continued to receive her silence and she had continued to receive his cooperation on a number of small but meaningful favors over the previous year. He had vouched for her with a teacher when she'd plagiarized a paper. He had covered for her absence on a night she'd told her parents she was somewhere she wasn't. A pattern of small debts, carefully accumulated.
What Sienna held over him was the lake incident, which had been more serious than Logan's careful description had suggested. According to Sienna's private account, the confrontation had involved Zach and two others physically, and it had been Caleb who had coordinated the silence afterward, speaking individually to each witness, constructing the version that had been told consistently ever since. If it came out, Caleb's scholarship to the program he'd been building his entire high school career around would almost certainly be withdrawn. His application had emphasized community leadership and conflict resolution. The irony was not lost on Sienna, who had noted it twice.
But the journal also made clear that in the weeks before the party, something had shifted. Sienna had decided that the arrangement was no longer enough. She had decided to tell. Not just about Caleb and the lake incident, but about Logan's behavior, about the things Zach had confided, about the small and larger hypocrisies she had documented in each of them. She had written a version of events that she planned to send to the school administration and, if necessary, the police.
The party was to be her last night as part of the group. Her exit.
Ava sat in the school parking lot with five minutes before the first bell and looked at her phone screen and thought about a girl who had felt so unsafe in her own friend group that she had spent a year building a case against them, and who had decided to detonate it and walk away.
Sienna had told Logan she was going to do it. Logan had told her to be careful. Had he told Caleb? Or had Caleb found out some other way?
The messages on the phone. You tell them and it's over.
That was from an unnamed number. But Sienna had Caleb in her contacts. Why would he message from an unnamed number unless he had a second phone, or unless he had borrowed or used someone else's device?
She wrote that down too.
The bell rang. She went inside and spent the morning in a state of careful external attention, taking notes in class, answering when called on, performing the ordinary function of a student who was thinking about nothing unusual. Inside she was assembling and reassembling the same pieces, looking for the arrangement that made all of them fit.
She thought she was getting close.