Tormod Cockburn Books in Order

Archaeologist Gill McArdle investigates a supposed unicorn skull on Harris, hoping to revive his damaged career. Rumors of a tusked creature lead him toward evidence of manipulation and the disturbing possibility that the animal is a killer.

Struggling magazine editor Gill McArdle follows an unusual animal carcass from Caithness to Loch Ness. Reopening an archaeological site challenges his skepticism as strange sightings suggest danger beneath the loch’s waters.

On Orkney, Gill McArdle studies a carving whose religious symbol appears impossibly early. A friend’s death and a teenager’s notebook of numbers complicate the puzzle, pointing his investigation toward a mystery among the stars.

Gill McArdle races to investigate a battlefield before roadworks bury it, while a detective seeks help identifying a possible serial killer. A disturbing archaeological discovery draws Gill toward a powerful enemy.

Searching Iona for royal graves, Gill McArdle suspects his survey is becoming a manipulated treasure hunt. Meanwhile, Cassy Tullen finds an unexpected ally as she prepares to confront the forces threatening her life.

An inscription in a ruined church challenges the authenticity of Scotland’s Stone of Destiny. Gill McArdle follows the evidence while an opponent prepared to kill blocks his search for the truth.

DCI George Wiley seeks a seemingly spectral thief while Gill McArdle investigates the lost village of Culbin. Their separate mysteries converge when an apparition suggests the supposed ghost may have a tangible explanation.

A collapsed coastal cliff reveals two mysteries inside a forgotten cave, bringing DI Alex Lillico into another investigation involving Gill McArdle. Tensions within the Armour Group and Adina Mofaz’s secret knowledge point toward an approaching catastrophe.

After falling from Stirling Castle, dying Conall Canmore finds himself healed in an earlier version of the city. Repeated journeys backward through history unfold alongside a succession crisis and terrorist attacks in an alternative modern Scotland.

An archaeological dig uncovers a troubling secret as Scotland recovers from earth tremors and braces for worse. Gill McArdle must rally the Armour Group while their enemy prepares a trap and alarming news arrives from the Hebrides.

A second ghostly castle appears in Dalria’s capital, sending Artemis Macintyre and James Guthrie to find the key that might close it. Rival powers maneuver to control the anomalies while investigators pursue the forces behind the attacks.

Artemis Macintyre’s team can now predict the destructive course of the Shadow Castles, but stopping them remains elusive. As another threatens Dalria’s second city, evidence suggests an organized design and troubling questions surround Conall Canmore.

Facing the growing threat of the Shadow Castles, Dalria assembles a team to enter one. Their mission seeks to establish whether the anomalies are natural phenomena or weapons threatening the nation.