Book retaliates, breaking with the Amish tradition of non-violence. While in town, Hochleitner is harassed by tourists. He deduces that Schaeffer and McFee murdered Carter after discovering his role in the case to get closer to Book, with the aid of a third corrupt officer, Detective Sergeant Leon Ferguson. Book goes into town with Eli to use a payphone, where he learns that Carter has been killed. After accepting an invitation to a barn raising for a newly married couple, Book gains Hochleitner's respect. His relationship with the Amish community deepens as they learn he is skilled at carpentry and seems like a decent, hard-working man. During his convalescence, Book dresses in Jacob Lapp's clothing in order to avoid drawing attention to himself.

The Lapps' neighbour Daniel Hochleitner had hoped to court her and this becomes a cause of friction. Book slowly recovers in their care and begins to develop feelings for Rachel, who likewise is drawn to him. Rachel's father-in-law Eli reluctantly agrees to shelter him despite his distrust of the outsider. Book insists that going to a hospital would allow the corrupt police officers to find him and put Samuel in danger. Knowing Samuel and Rachel are now in grave danger, Book orders his partner to remove all traces of the Lapps from his files and he drives the boy and his mother back to their community, but his loss of blood causes him to pass out in front of their farm. Since only Schaeffer knew of Book's suspicions, he realises Schaeffer is also corrupt and tipped off McFee. Book is later ambushed and shot in a parking garage by McFee and left badly wounded. Book expresses his suspicions to Chief of Police Paul Schaeffer, who advises Book to keep the case secret so they can work out how to proceed.

Book surmises that McFee sold the chemicals to drug dealers, and that the murdered detective had been investigating the theft. Book investigates and finds out that McFee was previously responsible for a seizure of expensive chemicals used to make black-market amphetamines, but the evidence has now disappeared. Although Samuel is unable to identify the perpetrator from mugshots or a line-up, he later sees a newspaper clipping in a trophy case of narcotics officer James McFee receiving an award and points him out to Book. Detective John Book is assigned to the case where he and partner Sergeant Elton Carter question Samuel. While waiting for a connecting train, Samuel goes into the men's room and witnesses the brutal murder of an undercover police officer, but manages to evade detection by hiding in the stalls. Rachel and Samuel travel by train to visit Rachel's sister, which takes them into Philadelphia. In 1984, an Amish community outside Lancaster, Pennsylvania attends the funeral of Jacob Lapp, who leaves behind his young wife Rachel and eight-year-old son Samuel.

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