DNA is a play by Dennis Kelly, written in 2008 and first performed in the National Theatre's Shell Connections programme. It follows teenagers who accidentally cause a classmate's death, then cover it up — raising questions about morality, peer pressure, and how ordinary people come to do terrible things.
What is the plot of DNA?
The play alternates between two settings: a street (where Jan and Mark deliver increasingly alarmed updates) and a field (where Phil, Leah, and the others meet to discuss what to do).
The group accidentally caused the death of Adam — a boy they bullied — by pushing him into a grille on a dare. Adam fell and disappeared into the drain beneath. Rather than confessing, Phil devises a plan to frame an innocent man (a DNA sample from a found dental impression implicates an unrelated postman). The cover-up 'works' — the postman is arrested, and the police investigation ends.
The moral cost, however, is severe. Those who joined the cover-up are changed by it: one character, Cathy, becomes increasingly violent and unpredictable as she discovers a taste for power. Another, Danny, withdraws completely. Richard replaces Phil as a social leader. And then, shockingly, Adam turns out to be alive — having survived the fall and lived in the countryside. Phil's response to this complication is to instruct the group to silence Adam permanently, and Cathy complies.
The play ends in a deceptive calm: the group has escaped justice, but each individual has been fundamentally altered, mostly for the worse.
What are the key themes of DNA?
Morality and moral compromise. The play does not preach or offer easy judgements. Instead, it shows how a group of ordinary young people, each individually capable of moral feeling, cooperate in escalating wrongdoing because the alternative (confession) seems worse. Kelly forces the audience to recognise the logic of the characters' choices even as those choices lead to catastrophe.
Group psychology and peer pressure. The group collectively enables actions that none of them would take alone. Phil's leadership is built on silence — he rarely speaks, but his rare pronouncements carry absolute authority. The others defer to him, suppress their own moral instincts, and compete for his approval. Kelly dramatises how individuals surrender judgement to group identity.
Leadership and power. Phil's cold pragmatism is shown to be effective — his plan works — but the play raises the question of what kind of leadership this is. By the play's end, Cathy has taken Phil's role and is described as 'popular, but dangerous'. The most effective leader is not the most moral one.
Guilt and identity. Each character's response to guilt differs, and those differences reveal character: Richard becomes a leader to cope with complicity; Danny withdraws; Cathy channels guilt into violence; Leah, the play's moral voice, disappears from the group. The play suggests that shared guilt does not create solidarity — it fragments.
Who are the key characters?
| Character | Key traits | Role in the play |
|---|---|---|
| Phil | Silent, cold, pragmatic; eats throughout | Devises and enforces the cover-up; the group's de facto leader |
| Leah | Anxious, talkative, morally aware | Speaks most; questions the group's actions; the audience's point of moral reference |
| Cathy | Initially eager to please; becomes violent | Carries out the final, darkest act; embodies the corrupting effect of complicity |
| Richard | Follows Phil; increasingly takes his place | Represents how individuals grow into power vacuums |
| Danny | Withdrawn, overwhelmed | Shows guilt as paralysis |
| Jan and Mark | Deliver updates; increasingly panicked | Structural device; their escalating fear mirrors the play's rising tension |
| Adam | The victim; almost wordless | His survival intensifies the moral stakes dramatically |
What is the significance of the play's structure?
Kelly structures DNA in four acts, each divided into three scenes in a fixed pattern: field, street, field (or variations). This mechanical repetition creates a sense of rhythm and inevitability — the group keeps gathering, keeps compounding the problem, keeps making the same structural error.
The two-setting structure is also significant: the street scenes (Jan and Mark) are reactive and panicky; the field scenes (Phil, Leah, the group) are where decisions are made. The field is a site of control and also of moral abandonment.
Phil's silence is a structural device too: by making the group's leader almost non-verbal, Kelly forces the audience to read him through others' reactions and through his actions, not his words.
Key quotations from DNA
| Quotation | Speaker | Significance |
|---|---|---|
| 'Nothing. I feel nothing.' | Phil | Spoken (or not spoken — he eats instead). His emotional detachment is the play's most disturbing quality |
| 'Someone has to do something.' | Leah | The moral urgency that the group consistently refuses to act on |
| 'You're a good person, Phil.' | Leah | Desperate; she needs to believe this even as his actions contradict it |
| 'She's… happy.' | Richard, of Cathy | The final revelation: moral corruption has made Cathy content |
| 'Did you know that chimpanzees are capable of tearing a man's arms from their sockets?' | Leah | One of her many anxious speeches; signals the play's interest in animal behaviour and human morality |
How do you write a GCSE essay on DNA?
- Choose a specific, arguable thesis. 'Kelly presents the group's moral decline as inevitable' is more interesting than 'The characters do bad things.'
- Use Leah and Phil as your central contrast. Leah voices moral awareness; Phil enacts its opposite. Most themes in the play pass through these two characters.
- Analyse structure as well as language. The four-act mechanical structure, Phil's silences, the two-setting design — these are all meaningful and worth discussing.
- Keep context focused. Relevant context includes: 2008 British society; tabloid moral panics about teenage gangs and violence; the psychology of bystander behaviour.
Frequently asked questions
What does the title DNA mean?
The title works on several levels. Most obviously, it refers to the DNA evidence at the centre of the cover-up — the dental impression that implicates an innocent postman. More thematically, DNA suggests identity and biology: the play raises questions about whether moral behaviour is innate ('in our DNA') or a product of social circumstance. The chimpanzee speeches delivered by Leah repeatedly invoke the idea that human behaviour may be less distinct from animal behaviour than we would like to think.
Who is the protagonist of DNA?
Both Leah and Phil could be considered the central figures, but for different reasons. Leah speaks the most and is the audience's moral compass. Phil drives the plot. In performance, the play often feels like Leah's story because she alone articulates the moral weight of what is happening. Phil's perspective is inaccessible — his interior life is withheld from us, which makes him both more frightening and more ambiguous.
Is DNA a tragedy?
Kelly resists generic classification, but DNA has significant tragic elements: the group's initial error leads through a sequence of increasingly catastrophic choices to a conclusion where the most moral character (Leah) has vanished and the most effective character (Cathy) has become violent. However, unlike classical tragedy, there is no catharsis — the audience is left uncomfortable rather than purged.
How should I write about Phil's silence?
Phil's silence is itself a language choice that deserves analysis. In essay writing, you can discuss what Phil's silences do — they create authority, compel others to fill the space, and make his rare statements more powerful. You can also consider what Kelly achieves by withholding Phil's interiority from the audience: it prevents identification, which is unsettling; it forces us to judge him by actions alone; and it models the behaviour of the group — everyone else suppresses their voice around him.
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