Duncan Idaho's Sacrifice
DuneTraces the swordmaster's role as bridge between Atreides and Fremen and his final gift of time to Paul and Jessica.
increasing
Bearing strength in each event
decreasing
Envoy to Sietch Tabr

Envoy to Sietch Tabr
Diplomat-Sword
Duncan Idaho is sent to live among the Fremen of Sietch Tabr. He earns Stilgar's respect by his honesty and fighting skill.
Bond with Stilgar
Stilgar permits Idaho a dual allegiance and gives him a crysknife. Idaho becomes the Fremen ambassador to the Atreides.
Knowledge of the Desert
Idaho reports on Fremen strength, the uselessness of shields, and their hatred of Harkonnens. His report shapes Leto's hopes.
Guardian in the Residency

Guardian in the Residency
Surveillance Duty
After Hawat suspects Jessica, Duncan is ordered to watch her. His discomfort with the task does not stop him.
Drunken Outburst
He returns from a night with a smart local girl, drunk on spice beer, demanding to know why he is confined. Jessica sees her own clan's stress in him.
Loyalty Hidden
Duncan remains loyal to Leto, yet his drunken outburst reveals the Atreides morale is fraying.
Last Stand in the Laboratory

Last Stand in the Laboratory
Rescue
Duncan retrieves Paul and Jessica from the desert outside Tuono Basin after Kynes finds them. He tells them the Baron has destroyed the house.
Holding the Door
When Sardaukar attack the testing station, Duncan blocks the passage while Paul and Jessica escape. His body is broken by overwhelming numbers.
Death of a Friend
Paul feels Duncan's loss before it is spoken. The swordmaster's sacrifice is one more wound in the Atreides war.
Legend of Loyalty

Legend of Loyalty
Canonized Memory
Paul remembers Duncan as the moral ideal of the Atreides. His death haunts every later victory.
Water Bond
Stilgar and the Fremen honor Idaho as their friend. Duncan's water is mingled with both tribes.
Unfinished Rite
Paul cannot mourn Duncan as he should because the desert still threatens. The debt to Idaho is repaid only in vengeance.
Honor in the New Empire

Honor in the New Empire
Named among Heroes
Paul's victory is built on Duncan's open road. The Federal troops and Fedaykin both honor his name.
Promise Kept
Paul ensures the Fremen and Atreides alliances that Duncan forged remain central to his rule. Idaho's peace is kept.
Eternal Sentinel
Duncan Idaho becomes a remembered guardian of House Atreides. His sacrifice is the moral foundation of Paul's crown.
before the Atreides occupied Arrakis
the early days of Atreides rule
the night of the Harkonnen attack
the years of Paul's desert exile
after the Battle of Arrakeen