Book 1

Blackman's Coffin

by Mark de Castrique

Published 24 April 2008

Book 3

The Sandburg Connection

by Mark de Castrique

Published 30 September 2011
It should have been routine, a simple assignment for PI Sam Blackman and his partner Nakayla Robertson. Follow a history professor who's suing a spinal surgeon for malpractice and catch her in physical activities that undercut her claim. When professor Janice Wainwright visits Connemara, Carl Sandburg's home in Flat Rock, N.C., and climbs the arduous trail to the top of Glassy Mountain, Sam believes he has the evidence needed to expose her - until he finds the woman semiconscious and bleeding on the mountain's granite outcropping. Her final words: ''''It's the Sandburg verses. The Sandburg verses.'''' As the person to discover the dying woman, Sam becomes the first suspect. An autopsy reveals painkillers in her blood and solid proof of the surgeon's errors. Why did this suffering woman attempt to climb the mountain? Did she stumble and fall? Did someone cause her death? A break-in at the Wainwright farmhouse and the theft of Sandburg volumes convince Sam someone is seeking potentially deadly information. But what did Pulitzer Prize winner Sandburg have in his literary collection that inspires multiple murders? And who will be targeted next?

Book 4


Book 5

A Specter of Justice

by Mark de Castrique

Published 3 November 2015
When private detective Sam Blackman agrees to help his partner and lover, Nakayla Robertson, conduct a fundraiser for orphaned twin boys, he does so to ease his conscience. The boys' parents were killed in a courtroom shootout where Sam was the key witness against the twins' father. The charity event, a nighttime ghost tour of the legendary haunted sites of Asheville, North Carolina, seems harmless enough. Sam only has to tell the story of a grief-stricken woman who hanged herself from an old, arched stone bridge. ''''Helen, come forth,'''' he cries. Sam and his tour-goers expect the actress playing Helen's ghost to walk toward them from the bridge's dark recesses. Instead, her body tumbles from overhead and dangles at the end of a noose. Someone has reenacted the legend with deadly authenticity. When a second murder mimics another old ghost tale, the police fear a macabre serial killer is on the prowl. But the case isn't Sam's to solve. Then, a tidal wave of evidence begins to point to one man -Sam's friend, defense attorney Hewitt Donaldson. Sam and Nakayla, firmly believing in Donaldson's innocence, must not only prove it, but halt a murderer seemingly bent on retribution. Does the killer's motivation rise from the present, or is Team Donaldson dealing with some specter from the past?

Book 7

Murder in Rat Alley

by Mark de Castrique

Published 31 December 2019

In this unusual spin on the classic spy novel, murder strikes from our wartime pasts…
Iraq War veteran Sam Blackman with his prosthetic leg and his no-nonsense private eye partner Nakayla Robertson love their investigations which always carry a thread from the past—and they love each other. An interracial couple in the new South, the Asheville, NC, pair has surrounded themselves with a terrific support team including an unorthodox lawyer and a veteran cop. They deploy humor both to bind them together and to deflect insults. Plus, it helps deal with the tragedies their work uncovers.
Such a tragedy interrupts a meeting between the PIs and the neighboring law office when a body is unearthed from the grounds of the nearby Pisgah Astronomical Research Institute. During the Cold War it monitored developing space programs. Today it plays a vital role gathering weather and climate data. The body has been in the ground a long time. Why would its discovery spark off a new murder in Asheville's mountain music scene, the victim found amid the garbage of dark, dank Rat Alley?
She was the fiancée of the man murdered long ago. But surely this case is more than a domestic drama playing out over time….
The Blackman Agency Investigations excel at merging past and present, bringing little-known history to light, and are perfect for fans of James Lee Burke, Stephen Mack Jones, Margaret Maron, and Robert B. Parker.