Pima County Sheriff's Department

The Pima County Sheriff's Department is a county law-enforcement agency whose homicide investigations form a central strand of the novel's criminal inquiry. Through investigators including Brandon Walker and Brian Fellows, it follows leads from individual crime scenes toward a broader pattern of cases. Its reach, however, is not unlimited: jurisdiction depends on the location and circumstances of a killing, and the department's investigations exist alongside those of federal and tribal authorities. The agency is thus both an instrument for pursuing evidence and part of a fragmented system in which responsibility and investigative capacity do not always coincide.

Jurisdiction and Investigative Scope

The department's homicide role is established through Brandon Walker's earlier work as a Pima County homicide detective. He had gone to Diana Ladd's home near Topawa while investigating a homicide in which her first husband, Garrison Ladd, was a suspect. The case later brought Brandon back into Diana's life when Andrew Philip Carlisle, an accomplice of her dead husband, was imprisoned and eventually came stalking her. The department's work therefore reaches beyond identifying a suspect at a scene: investigations leave consequences that can return years later to the people connected with them.

The contrast between the murder of Gina Antone and the murder of Roseanne Orozco clarifies the department's jurisdictional limits. Gina was killed off the reservation, and the suspected perpetrators were Anglos, so the Pima County Sheriff's Department investigated her case. In the Orozco case, although the exact murder site was never found, investigators assumed Roseanne had died on the reservation and had been killed by another Native person. Under that division of responsibility, reservation homicides involving Native victims and suspects fell to either the Federal Bureau of Investigation or local tribal police, not the county department. Where a case was thought to have happened thus helped determine which institution would take it on, even when the location itself remained uncertain.

Brandon remembered that investigations of reservation murders by the Federal Bureau of Investigation were often cursory unless the victim was Anglo and the suspected killer Native. The Papago Tribal Police Force, sometimes known as Law and Order, was called to the Orozco scene, but it lacked training, equipment, and money. Its investigation produced no apparent result. Brandon had not known how completely the case had stalled until Emma Orozco told him. The novel sets that failure against the department's authority in Gina's case: the distinction is not simply between solved and unsolved murders, but between agencies assigned different responsibilities and supplied with sharply unequal capacity.

Brandon Walker and the Department's Earlier Work

Brandon's connection to the department includes both investigative experience and the personal circumstances that limited how closely he followed its cases. By the time he recalled the Orozco investigation, he was newly divorced, short of money, and trying to meet alimony and child-support payments. He sometimes worked as a rent-a-cop and moved in with his parents, while his father's health deteriorated. The Orozco homicide had not been his case, and these pressures help explain why he did not keep track of every investigation that briefly crossed his desk. His later knowledge of the case is therefore incomplete, rather than the product of a continuous departmental file review.

When Emma describes the unresolved case, Brandon approaches her indirectly. Having lived among the Tohono O'odham, he knows direct questions may be considered impolite, so he limits himself to an observation. He watches her reflection rather than looking directly at her, and recognizes the courage involved in revisiting her daughter's past with a stranger and a white man present. The scene shows an investigator adjusting his conduct to the community whose history he is helping investigate; it also places the work of reopening the case in partnership with Emma, not solely within the department's authority.

Years later, Brandon is no longer acting as a sworn department detective. As a member of The Last Chance, he helps Emma pursue new possibilities, including the use of modern testing to examine Roseanne's pregnancy and the circumstances of her death. He understands that investigators in 1970 had let the case slide after learning that Roseanne's father was not the father of her baby. By 2002, different tools might reveal information unavailable to them, but pursuing that information involves an emotional risk for Emma. When the baby's remains are exhumed without permission from the tribal council, Brandon is caught between the desire to help survivors and the requirements for evidence that could be used in court. He recognizes that the rapid, unauthorized excavation compromises the chain of evidence. This boundary marks the difference between the department's formal investigative role and Brandon's later, less clearly empowered effort to secure answers.

Brian Fellows and Departmental Conditions

Brian Fellows's career shows the institutional pressures affecting the department from within. He joined as a deputy while Brandon was still in office. Under the later administration of Sheriff William Forsythe, Brian expected he might be dismissed; instead, he received poor assignments and spent longer than expected working patrol cars. He remained, kept his record clean, and did good work. After ten years, he was promoted to Investigations. As newer employees arrived and older ones retired, his connection to the previous sheriff mattered less to his standing in the department.

Budget limits continue to shape the work Brian performs as a homicide detective. On a weekend day shift, detectives must work alone rather than in pairs. Brian is comfortable taking a solo assignment, although he likes his partner, PeeWee Segura. His independence also reflects an earlier period when his association with Brandon had made him a departmental loner. When a lead takes him from the Fast Horse Ranch crime scene to a house associated with Professor Rice, he finds a maroon Toyota Tacoma registered to Medicos for Mexico. The vehicle could be Erik LaGrange's company truck, a possibility that might explain why no vehicle was registered in Erik's own name. After getting no response at the house, Brian reports to his weekend supervisor that he may have a lead and asks for another detective and a warrant. The need to seek backup and legal authority illustrates both his initiative and the procedures that constrain what a lone investigator can do.

Brian's work also depends on coordination: he takes Sue Lammers's information, arranges for a deputy to drive her and her dog home, and says he will contact her if investigators need anything further. In a later interview involving Erik LaGrange, Brian arrives early and learns that Erik will be represented by a public defender. These episodes show investigations as a sequence of practical obligations—interviewing, arranging assistance, securing authority, and preparing for legal proceedings—not merely the pursuit of a suspect.

Evidence, Connections, and Consequences

The department's investigators gradually connect the new cases with older files. Brian reviews reports from similar killings, including cases in which unidentified victims were left in the desert and others in which remains had been placed in trash containers. When a clerk brings him Roseanne Orozco's dusty file, the old case appears strikingly similar to those he has been examining. The archive does not by itself establish a connection, but bringing it into the present investigation changes what Brian can compare and pursue.

The identification work depends on distinguishing possible matches from established conclusions. In one fingerprint examination, an analyst sets aside prints already attributed to the suspect and concentrates on unknown prints that might identify the victim. The logic is practical: identifying a victim sooner may help detectives determine who killed her. Later, comparison of the Orozco prints produces a result that overturns an expectation. Brian says that Larry Stryker is not their suspect: none of the Orozco prints matches the prints taken from the Burger King coffee cup. One Orozco print does match an unidentified print found at LaGrange's house, and another comparison links it to Yuma County. The result redirects the investigation without, on its own, proving who committed a crime.

The department's evidence work extends from scene examination to medical and interagency records. A report notes that a machete had been found soaking in soapy water in a kitchen sink; the washing had not removed every trace, but the blade and handle were clean of usable fingerprints. Brian later attends the medical examiner's examination of a victim whose fingerprints have already been sent to the laboratory. The examination documents evidence of prolonged abuse without resolving the larger question of identity or responsibility. Elsewhere, records from the Indian Health Services hospital in Sells, digitized through an earlier study of health and mortality, have helped support the hospital's kidney dialysis center. Brandon recalls that the same historical records could potentially illuminate the past. Together, these details show how investigations depend on evidence gathered for different purposes, and on careful limits to what any single test can establish.

Institutional Role and Limits

The Pima County Sheriff's Department is not presented as the sole authority over every killing in the region, nor as an institution untouched by its own political and financial conditions. Its county detectives investigate cases within their jurisdiction, while reservation homicides may be assigned to federal or tribal authorities. Inside the department, budget reductions lead to solo shifts; changes in administration affect Brian's assignments and career; and procedural requirements shape the pursuit of warrants, interviews, and usable evidence.

That institutional picture becomes most visible when investigation crosses into private pursuit. As an armed homicide suspect flees north on Highway 79, Brian identifies himself to the dispatcher as a department detective and reports that a private investigator is following. His call distinguishes the official officer from the civilian pursuer even as both are moving after the same suspect. Across the novel, the department's importance lies in its capacity to investigate, compare evidence, and mobilize lawful authority, but also in the gaps between its jurisdiction and the unresolved cases left to other agencies or to people seeking answers outside formal police work.