Chapter summaries Cross and Sampson James Patterson & Brian Sitts

Chapter 40: Sampson Investigates the Blast Site

Spoiler Notice

Spoiler Warning: This analysis contains details from Chapter 40 of Cross and Sampson. If you haven’t read the chapter yet and want to preserve the surprises, turn back now.

Summary

John Sampson and FBI analyst Anna Rizzo arrive at a remote sandpit outside Palmer, Georgia, and meet Police Chief Wilma Grace. The pit is a known hangout littered with shot-up targets, bullet-riddled drums, fire pits, beer cans, and wine bottles—a no-man’s-land the locals leave mostly alone. Last year a van exploded there, and Grace tells them the farmer who called it in thought it was a stump-blow or shotgun. By the time her department arrived, the vehicle was barely recognizable. With no forensic resources, they called the Georgia Bureau of Investigation, which collected the evidence and never shared the results.

Rizzo notices a depression in the sand and fused grains from the explosion’s heat, pinpointing the van’s original position. She asks Sampson for her measuring tape and walks away from the depression, unspooling the reel up a slope past scarred trees and broken branches. At the edge of damage she calls out: the distance is one hundred seventy-four feet. Rizzo immediately compares that to the first DC bombing’s one-hundred-seventy-foot blast zone and the Vietnam memorial’s one-hundred-seventy-seven-foot zone, then declares the bomber used Palmer as a practice field to dial in his blast radius.

Key Events

  • Sampson and Rizzo meet Chief Grace at the sandpit and review its history of parties, target shooting, and occasional fights.
  • Grace describes the van explosion from a year earlier: the vehicle was destroyed, axle and engine block fragments were all that remained, and GBI took over the investigation without feedback.
  • Rizzo locates the exact spot of the van by spotting a ground depression and heat-fused sand.
  • Using a 300‑foot tape, she measures the blast zone at 174 feet, matching it to the DC (170 ft) and Vietnam memorial (177 ft) bombings.
  • Rizzo concludes the bomber rehearsed in Palmer, refining his explosive device before the other attacks.

Character Development

  • John Sampson works seamlessly with Rizzo, letting her lead the site evaluation. His role in fetching the tape shows he trusts her instincts and method.
  • Anna Rizzo demonstrates keen forensic awareness: she identifies the van’s location from subtle ground signs, then instinctively measures the blast radius to link the scene to the broader pattern. Her ability to recall and compare precise distances from prior bombings reveals the depth of her preparation.
  • Wilma Grace is pragmatic and candid about her small department’s limitations. Her frankness—calling the pit a no-man’s-land and admitting the GBI ghosted her—paints a realistic picture of local law enforcement overwhelmed by a major incident.

Themes, Symbols, or Motifs

  • Rehearsal and Precision: The bomber’s practice run underscores the methodical, calculating nature of the attacks. The nearly identical blast zones turn the sandpit into a symbol of premeditated violence.
  • Left‑Behind Evidence: The depression and fused sand, overlooked for a year, represent how critical clues persist in plain sight, waiting for an expert eye.
  • Small‑Town Neglect: The GBI’s silence and the town’s acceptance of the pit as a no‑man’s‑land reflect how resource gaps can allow terrorism to incubate unnoticed.

Why This Chapter Matters

This chapter transforms the Palmer explosion from an isolated, mysterious incident into a vital piece of the bomber’s timeline. By establishing that the blast zone was a calibrated 174 feet—virtually identical to the DC and Vietnam memorial attacks—Rizzo proves the bomber perfected his device in rural Georgia before striking higher-profile targets. The scene highlights the investigative partnership between Sampson and Rizzo, sets a forensic baseline for the entire case, and deepens the sense of a patient, professional adversary who leaves deliberate breadcrumbs.

Study Questions and Answers

  1. How does Rizzo figure out where the van was originally parked?
    She spots a shallow depression in the sand and notices that the sand around it has been fused from the explosion’s heat, marking the seat of the blast.
  2. What three blast‑zone distances does Rizzo compare?
    Palmer (174 feet), the first Washington, D.C., bombing (170 feet), and the Vietnam memorial bombing (177 feet).
  3. Why does the Palmer site matter to the overall investigation?
    It shows the bomber rehearsed his attack there, tuning the explosive yield to achieve a specific radius before moving on to the other locations, linking the incidents through shared forensic signature.

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