Why Do Sydney Carton and Charles Darnay Look Alike in A Tale of Two Cities? Are They Related?

A Tale of Two Cities builds much of its central drama around two men who could hardly be more different. Charles Darnay is an idealistic French emigre trying to distance himself from the family he was born into, while Sydney Carton is a brilliant but self-destructive English lawyer who has largely stopped expecting anything meaningful from his own life. Yet from the moment they meet, the story insists on one strange connection between them: the two men look remarkably alike.

The 2026 MGM+ adaptation keeps that detail at the center of their relationship. Kit Harington plays Sydney, while Francois Civil portrays Charles, and the series describes the two men as physically alike but spiritually opposite. Their resemblance first becomes important during Charles’ treason trial, but it carries a much larger meaning as both men become involved with Lucie Manette.

Related: What Did Thérèse Find in the Bastille in A Tale of Two Cities? The Evrémonde Clue Explained

Are Sydney Carton and Charles Darnay Related?

No. Sydney Carton and Charles Darnay are not brothers, cousins or otherwise related. qwThere is no hidden family connection explaining why they resemble each other. Their likeness is a deliberate coincidence created by Charles Dickens, and it functions as one of the most important storytelling devices in A Tale of Two Cities.

That is particularly worth clarifying for viewers of the television series because the story contains several genuine family secrets. Charles has concealed his Evrémonde background, Alexandre Manette’s history is connected to that family, and Thérèse Defarge is uncovering information from the past. Sydney and Charles looking alike, however, is not another secret-parentage mystery. Dickens simply presents them as two unrelated men who happen to bear an unusually strong resemblance.

How Does Their Resemblance Save Charles?

The likeness becomes useful almost immediately during Charles’ trial. Charles is accused of treason, and part of the case against him depends on a witness claiming to have seen and identified him. Sydney notices a weakness in that certainty.

If another man in the courtroom looks enough like Charles to be mistaken for him, then the witness cannot reasonably be completely certain that Charles was the person he saw.

In Dickens’ novel, Sydney draws attention to the similarity and Stryver uses it during the cross-examination. Once Sydney removes his wig, the resemblance becomes even more obvious to the courtroom. The witness’ confidence is undermined, helping create the reasonable doubt that contributes to Charles’ acquittal.

The television adaptation uses the same basic idea. Lucie turns to Sydney for help because she needs Charles free, and Sydney realizes that his own face can become part of the defense. It is one of the story’s cleverest early twists because Sydney saves Charles simply by existing.

Why Did Dickens Make Sydney and Charles Look Alike?

The resemblance is not really about genetics. It is about possibility. Sydney and Charles function as doubles throughout A Tale of Two Cities. They look alike on the outside, but their lives have developed in almost opposite directions.

Charles is controlled, purposeful and determined to separate himself from the wrongdoing of his family. Sydney is equally intelligent but has allowed disappointment, alcohol and self-loathing to dominate his life.

Dickens even places the two men beside each other after the trial and emphasizes that they are similar in appearance but very different in manner. Later, Sydney looks at himself and realizes why Charles bothers him so much. Charles represents a version of the man Sydney believes he could have become if his own life had taken another direction. That makes Charles more than Sydney’s romantic rival. He is almost a living reminder of Sydney’s wasted potential.

Why Does Sydney Dislike Charles?

Sydney’s early hostility toward Charles is partly jealousy, but it begins even before their competition over Lucie becomes serious. After the trial, Sydney studies his own reflection and thinks about how much Charles resembles him. Rather than creating an immediate sense of friendship, the similarity irritates him because Charles seems to embody qualities Sydney no longer sees in himself.

Charles has discipline. He has ideals. He still believes his choices can change the direction of his life. Sydney sees someone with his face living a life that feels unavailable to him.

Once Lucie becomes part of the equation, that resentment becomes even more complicated. Sydney develops strong feelings for her, but Charles is capable of offering the kind of stable future Sydney doubts he can provide.

The 2026 series pushes that tension even further by making Lucie’s feelings for Sydney more mutual than they are in the novel. The adaptation has been explicitly presented as a powerful love triangle in which both men try to become worthy of Lucie’s love.

Are Sydney and Charles Supposed to Be Identical?

They are not necessarily meant to be identical twins. Dickens describes a strong enough resemblance that, when properly presented side by side, another person’s confidence about identifying Charles becomes unreliable. Their different clothing, behavior and personalities normally make them seem less alike than their actual facial features would suggest.

That distinction is important in the television adaptation as well. Kit Harington and Francois Civil are clearly two different actors rather than exact doubles, but the story asks viewers to accept that Sydney and Charles resemble one another closely enough for the similarity to matter.

Federation Studios’ own description of the series puts the idea directly at the center of the adaptation, describing the men as physically alike while being spiritually at opposite poles.

The point is therefore not that viewers should literally mistake Harington for Civil in every scene. The resemblance is part of the dramatic language of the story.

What Does Their Resemblance Symbolize?

Sydney and Charles are essentially two possible versions of the same kind of man. Charles spends much of the story trying to escape the identity he inherited. Born into the Evrémonde family, he rejects its privilege and cruelty because he wants the freedom to become somebody different.

Sydney has almost the opposite problem. He has no aristocratic identity to escape, but he feels trapped by the person he has allowed himself to become. His intelligence remains intact, yet he increasingly treats his own life as though it has already been wasted. Putting similar faces on those two men allows Dickens to constantly compare them.

Charles asks whether someone can escape the person society expects him to be. Sydney asks whether someone who believes he has already wasted his life can still become something better.

Lucie connects both questions because each man imagines a different future when he is around her.

Why Their Similarity Matters Beyond the Trial

The trial establishes the resemblance as a clever legal trick, but Dickens would not keep returning to it if that were its only purpose.

Sydney and Charles remain linked long after Charles walks free. Their shared appearance reinforces Sydney’s awareness of the life Charles has built, while their feelings for Lucie place them on parallel emotional paths.

The resemblance also gives the story an uneasy sense that these two men’s lives may eventually become interchangeable in ways far more significant than a courtroom identification. For viewers who have not read Dickens, that is where the 2026 series is best allowed to unfold on its own.

What can already be said is that Sydney Carton and Charles Darnay are not secretly related. Their resemblance is something more literary than biological. Dickens created two men who look almost the same so that A Tale of Two Cities could ask why two outwardly similar people can become so different, and whether either of them can ultimately change the life he appears destined to live.