Alastair Thorne: the Pegasus interrogator whose death split two crews

Lieutenant Alastair Thorne was the Cylon interrogator aboard Pegasus, a man who tortured and raped his prisoners and was still owed his life by around fifty shipmates. Galen Tyrol killed him accidentally in Galactica's brig, and the grievance over it reached all the way to Gaeta's mutiny.

By BillyPublished 9 Sept 2026

Lieutenant Alastair Thorne was an officer aboard the Mercury-class battlestar Pegasus at the time of the Fall of the Twelve Colonies, and his job aboard that ship was known to everyone on it. He was the Cylon interrogator, and his methods were torture and sexual assault, carried out with the help of Pegasus marines.

TL;DR

Thorne interrogated the Number Six infiltrator Gina Inviere on a routine basis. He and his men raped her repeatedly, his men lining up for turns, and by the time Galactica met Pegasus she was close to catatonic. Much of the Pegasus crew thought well of him regardless: Specialist Gage put the number of people who owed Thorne their lives at around fifty. He was assaulting the Caprica copy of Sharon Valerii in Galactica's special brig when Galen Tyrol and Karl Agathon broke in to stop him. Tyrol threw him against the brig wall, an exposed bolt pierced his skull, and he died. Admiral Helena Cain, who appeared entirely comfortable with how Thorne worked, had both men arrested. Colonel Jack Fisk told the pair in their cell that he and many others owed Thorne their lives, and his sympathies sat with the attackers rather than the victim. Years later Gage carried the same grievance into Felix Gaeta's mutiny.

Who killed Alastair Thorne?#

Galen Tyrol killed him, without meaning to, by throwing him against a wall of Galactica's special brig, where a bolt left exposed in the metalwork went into his skull.

Tyrol and Karl Agathon had gone in because Thorne was raping the Caprica copy of Sharon Valerii, the copy who later took the name Sharon Agathon. Stopping him took seconds and killed him. Admiral Cain arrested both men, and given how she had run her ship since the Fall, nobody aboard Pegasus was surprised by which side she came down on.

Why did the Pegasus crew defend him?#

Because he had saved their lives, or they believed he had. Specialist Gage said about fifty crew members owed Thorne their own survival, and Colonel Fisk counted himself among them.

Fisk made that clear to Tyrol and Agathon while they sat waiting to be tried. To him and to a large part of the Pegasus complement, the man who had died in Galactica's brig was not a criminal caught in the act but a shipmate, and the two men in the cell were the ones who had done something wrong. Both readings were available to the same set of facts, which is the point the confrontation was built to make.

The grievance outlives the ship#

Thorne's death carried on doing damage long after Pegasus itself was destroyed over New Caprica.

Gage never let it go. When he joined Gaeta's mutiny, he went at Karl Agathon directly, arguing that Thorne's death had gone unpunished and that Agathon's promotion afterwards had been unearned. That resentment is what put him in the assault on the Agathon family and at Gaeta's CIC station three and a half seasons after the fact.

Fulvio Cecere, who played Thorne, described the character as a patriot rather than a villain: doing his job, with methods you might question, in the service of saving lives and protecting his crew and his ship. That is very close to what Fisk says out loud, and it is not what the audience is being asked to accept.