Edge World recap

James McGill investigates a dead alien construct hidden inside Earth's moon, whose distress signal draws competing Galactic claimants and exposes Earth's dependence on revival machines made at 91 Aquarii. Legion Varus deploys to that world, rescues Galina Turov from the Shadowlanders, and becomes one side of a Galactic-sanctioned surface war. McGill repeatedly relies on unauthorized technology, covert alliances, and deception, culminating in secret use of Shadowlander drones to defeat the opposing Saurian force. He and Turov kill investigators who uncover the cheating. When the Skae begins removing Earth's moon, McGill trades Edgeworld for its return. He then races back to warn the Shadowlanders and offers evacuation through gateways. After the final numbered chapter, their ruler and her daughter travel to Earth to negotiate resettlement and continued revival-machine trade, leaving the evacuation underway and the political consequences unresolved.

Previously: James McGill is a veteran centurion of Legion Varus, serving under Tribune Galina Turov in Earth's mercenary forces. Human military power depends on Galactic technology, especially machines that can restore dead soldiers from stored records. McGill's past dealings have also made him known to powerful Galactic figures and connected him to forbidden technologies, disputed killings, and contacts outside official Earth channels. Earth remains a subordinate world within a larger imperial system, where provincial law can expose the entire species to punishment for one person's acts. Legion Varus has survived repeated off-world campaigns through a mixture of battlefield skill, revival, and McGill's willingness to improvise beyond his orders. At the opening of this volume, he is home on leave and avoiding military notifications until Turov overrides his block and recalls him for a secret assignment on the far side of the moon.

McGill is recalled from leave and sent to a secret base in the moon's far-side Aitken Basin. There he meets Bevan, a Hegemony materials specialist ordered to shadow him. Excavation beneath the base has exposed an immense, smooth barrier that resists ordinary tools and disrupts gateway technology. Turov intends to cast McGill through it if no physical entrance can be found. Florimel arrives to lead the scientific team, and McGill's daughter Etta prepares the compact casting equipment. Further digging uncovers fragments of extremely dense matter, allowing McGill and Bevan to recognize that the moon surrounds a hollow alien construct rather than a natural formation. Turov fears that disclosure will bring legal claims and political danger to Earth. When Bevan argues that the discovery should be preserved and studied, she kills him, frames the shooting as self-defense, and orders the excavation concealed. His specialist knowledge may still survive in his revival record, leaving her attempted suppression incomplete.

McGill travels to a remote lunar base with Bevan, a materials specialist assigned to the same classified operation. Beneath the base, excavation has exposed a vast, nearly impenetrable artificial surface. Florimel takes charge of the scientific work, while McGill's daughter Etta operates a compact casting system intended to send him through the barrier. The discovery proves to be a dead, hollow alien construct containing a frozen battlefield and the remains of six-limbed invaders. Turov tries to suppress the finding, kills Bevan, and arranges to erase his recent record, but Florimel has already transmitted evidence to Central. McGill's first casting appears to fail. A second insertion reaches the interior, where he finds that the first version of himself survived, creating two concurrent McGills. Both die deliberately before another revival. The disturbed construct then emits a powerful deep-link signal toward the Galactic core. Rival claimants are already responding, and either could assert a right to dismantle the entity or remove the moon. McGill proposes treating the site as a shared war memorial to protect Earth.

Galactic inspectors arrive early and turn the lunar inquiry into a murder prosecution, accusing McGill of killing former Governor Zlur and threatening punishment for humanity as a whole. McGill forces them to inspect the dead construct before questioning him. He leads them through installed gateways and deliberately triggers the construct's lethal defense, ensuring that the Magwa governor witnesses the danger firsthand. After revival, she rejects the claim that McGill murdered Zlur and directs suspicion toward other Galactic actors, though the inquiry remains open. A second crisis then overtakes the investigation. An alien claimant is moving toward 91 Aquarii, the world that supplies Earth's revival machines. Loss of that source would make Legion deaths permanent and threaten Earth's military system. The Magwa authorities will not defend the planet. Drusus orders an understrength Legion Varus to deploy immediately aboard Dominus, while authorizing McGill to seek a backup supply through his former Claver connections.

Aboard Dominus, McGill and Manfred turn an emergency training exercise into a destructive engagement that kills both officers and burns Green Deck. As the legion nears 91 Aquarii, Fike explains that its slow-turning desert is divided among Brightsiders, Nightsiders, and the technologically dominant Shadowlanders who created the revival machines. Before the landing, a hooded Shadowlander agent teleports into Turov's quarters, kills her, and escapes. McGill traces the intruders to Blue Deck, where three agents have murdered revival staff and sabotaged key equipment. They restore Turov, alter or erase her stored data, and teleport away with her, leaving no lawful record from which Earth can create another version. Fike assumes active command and treats the abduction as justification for invasion.

During the voyage, McGill and Manfred turn a training exercise into a destructive battle that kills both officers and burns Green Deck, demonstrating how heavily Varus depends on revival. At 91 Aquarii, Fike explains that the slow-turning desert world is divided among Brightsiders, Nightsiders, and technologically dominant Shadowlanders, who developed the revival machines amid their endless conflict. Just before arrival, Shadowlander agents infiltrate Dominus, murder Turov, sabotage revival facilities, revive her under their control, erase her stored record, and take her away. Their ruler claims the machines were recovered under contract and that Turov was arrested for unauthorized use. Fike assumes command, takes the ruler's daughter as a hostage, and treats the abduction as grounds for invasion. The captive assassin escapes briefly, kills a guard, and reaches Green Deck before McGill subdues her. Captain Merton secretly asks Central to replace Fike, but the landing proceeds. Diplomacy collapses when the Shadowlander ruler kills Graves and McGill kills her. Imported combat drones then ambush McGill's unit in the city, inflicting heavy losses and revealing that the Shadowlanders have access to equipment from outside Earth's province.

Drusus rules that Turov cannot lawfully be recreated because her official revival record was erased. He appoints Winslade interim tribune and orders McGill to recover her. McGill and Natasha break into Turov's quarters to find her galactic key, only to discover Winslade searching for it as well. McGill incapacitates him, takes the key and an advanced armored suit, and teleports alone into the Shadowlander settlement. He disables their drones with the key, captures the ruler's daughter, and exchanges her for Turov while extracting promises of continued provincial allegiance, protection, and discounted revival-machine sales. Turov returns to command, but the key is left in Shadowlander hands. With Magwa, Skae, and Nairb forces arriving, a tribunal considers control of Edgeworld. Maurice Armel appears for Province 926 with a large Saurian legion, while the Brightsiders and Nightsiders support the Skae. McGill secures the Shadowlanders' alliance by admitting where the key is. The tribunal converts the dispute into a regulated surface war between Galactic-backed coalitions, forbidding orbital bombardment and allowing each side to deploy its enforcers.

Legion Varus deploys around the Shadowlander town with local agents and hundreds of combat drones. Massed Brightsider and Nightsider attacks breach the defenses while Saurian troops strike the Starfall artillery. McGill preserves part of the brigade through a close counterattack, but most of its guns and much of his unit are lost. A further raid damages the Shadowlanders' drone dome and the living equipment used to produce revival machines. McGill traces captured teleport gear to the enemy camp and learns that another assassination team is already headed for the Shadowlander leadership. He returns with a fatal teleport injury in time to help defeat the raiders, but the queen is killed and her daughter retains the drones. After revival, McGill joins a costly assault on the Saurian artillery plateau. Harris, Barton, Leeson, and many others die during the approach, while McGill's advanced armor lets him break through the cliff-top defense. A Varus lifter destroys the artillery and apparently kills the enemy commander. Graves then kills the critically injured McGill so that he can be restored, ending the immediate siege threat at severe cost.

After McGill revives, Fike claims his advanced armor and unknowingly takes Turov's galactic key with it. McGill tricks him into returning the key, then manipulates Fike into giving him temporary command of a mixed Bloodworlder cohort. He defeats a Brightsider attack through disciplined volleys, trench defenses, and a giant-led strike on the enemy rear. The Shadowlander leader's daughter then proposes a final assassination operation against the opposing mercenary command and agrees to recover McGill's armor as his price. Natasha discovers that someone in the Shadowlander city has been communicating secretly with the enemy, suggesting the proposed teleport strike is a trap. She and McGill prepare an antimatter bomb to test the destination, but he refuses to risk detonating it remotely near civilians. Carrying the weapon himself, he jumps into the unknown location. He arrives in Florimel's Nightsider camp and learns that she intended to strand and kill him while extracting Varus intelligence. Florimel activates the bomb during their confrontation, destroying the camp and killing McGill along with tens of thousands of others.

McGill revives about a week after the antimatter blast. Galactic adjudicators hold Legion Varus responsible for violating the contest restrictions and order a decisive open-field battle against Florimel's Saurian force. McGill persuades the migrating Shadowlander leader's daughter to reject Florimel by showing that Florimel triggered the explosion. She secretly lends him about two hundred combat drones, which he conceals beneath the chosen battlefield. Varus withstands several Saurian waves but suffers devastating losses. McGill activates the hidden drones behind the enemy, destroying Florimel's mortar reserve and turning the battle. He then destroys the controller and claims the abandoned machines acted on old programming. Florimel reports the deception. Investigators produce video of McGill planting the drones and threaten both him and humanity. Natasha jams their deep link, after which McGill attacks them and Turov helps finish the killings. Varus has won the field but has now murdered Galactic officials and must prevent their evidence from reaching the core authorities.

McGill and Turov approach Governor Knox after the inspectors' deaths. Knox accepts a political arrangement, kills McGill, refuses to revive the investigators, and asserts a Varus victory. The Skae responds by pulling the dead alien entity out of Earth's moon, causing immediate tidal and weather disasters and threatening the planet's future. Released from confinement with Natasha, McGill receives authority from Drusus to attempt a direct intervention. He teleports onto the Skae, uses an antimatter blast to compel communication, and offers it immediate possession of Edgeworld in exchange for returning the moon. The Skae accepts, restores the moon's orbit, and reveals that it will reach 91 Aquarii in less than six days. McGill then travels back without authorization to warn the Shadowlanders and arrange evacuation. After a dangerous blind jump, he reaches their capital and admits that the Skae is coming to take the world. The ruler and her daughter blame him, propose rebellion, and try to kill him when he refuses to support a hopeless war. The final numbered chapter ends with McGill facing their rejection while the evacuation deadline continues to close.

Legion Varus survives the sanctioned battle after James McGill secretly adds Shadowlander combat drones to the fight. When Galactic investigators obtain proof, McGill and Galina Turov kill them after Natasha Elkin blocks their report. Governor Knox suppresses their revival and claims victory, allowing the Skae to remove the dead entity embedded in Earth's moon. McGill forces a direct bargain with the Skae: it restores the moon in exchange for immediate possession of Edgeworld. With fewer than six days before the transfer, he returns alone to warn the Shadowlanders. Their leaders initially reject evacuation and try to kill him, but he overpowers them and offers a gateway route to Earth. In the trailing unnumbered section, the ruler and her daughter visit Central and begin negotiating emigration and revival-machine trade with Drusus. Turov remains in command, Winslade's position is unresolved, and the inspector killings remain a concealed Galactic liability. The Shadowlander population has a possible refuge, but its mass evacuation is not yet complete.