Mia recognizes Detective Morgan Janus from a past school talk on suicide and feels disarmed by Janus’s praise and social-work persona. On the porch, Janus collects minute details of the morning routine and presses for abnormalities, frustrating the family as daylight fades.

Janus assures them multiple teams, including canine units, are searching the park, but she stresses keeping “all possibilities” open, even suicide, while obtaining consent for phone, banking, and life-insurance records. Dr. Hannah Park rejects the idea Adam left intentionally. Mia spirals, recalling Eugene’s shove and noticing Eugene react as if reading the accident report.

After Janus leaves, Mia reinterprets breakfast: real bacon, exaggerated kindness between parents and John, Eugene’s unusually targeted engagement, and Adam’s rainbow “toast.” These details feel either lucky memories or ominous clues.

The family divides tasks. Hannah calls contacts and combs paperwork. John tries YES-NO and picture-based communication with Eugene despite his resistance to such systems. Mia attempts to access Adam’s accounts, then finds a portable backup drive and a manila folder of questions paired with alphanumeric strings and “LOGIN—UYV@1019.” On the drive she sees a conspicuous life-insurance PDF and separate, translucent “HQ” folders (General/Research/Hypotheses/Experiments) that are password-protected; the codes she tries fail.

Remembering their pledge to share everything, Mia starts to tell Hannah about the discovery, but a helicopter begins circling the park. The family gathers in a tight hug, listening as it hovers, waiting in tense silence until the sound fades.