When his teenage daughter doesn't return home after a party, Tom Delaney anxiously combs the neighborhood and learns her boyfriend is also missing.
Fearing a friend was involved in Jenny's disappearance, Tom enlists Sophie's help; Emma investigates disturbing allegations about a teacher.
An anonymous tip leads to a frenzied chase -- and another puzzling clue; Zoe draws up a list of grudges; Tom glimpses a side of Rachel he never knew.
While Tom follows a new lead about Jenny, Sophie and Emma deliver devastating news; the Marshalls struggle to keep their cool.
In the wake of a dangerous confrontation, Sophie warns Tom to stay out of the investigation; Tom learns that Jenny was hiding a secret.
As a deadly fire rages, Tom frantically tracks Jenny's phone; more details about Chris' death emerge, and a confession tears a family apart.
Sophie blocks Tom's attempts to speak with Henry; while searching for Bobby at Heaven, Tom and Pete spot a familiar face.
Tom begs for Sophie's help getting to Bobby; before the night of the party, a cryptic entry in Rachel's diary sends Jenny on a quest for the truth.