This compendium synthesizes the four-act comedy’s action, characters, and principal themes with an editor’s emphasis on structure, causal links and socio-cultural subtext.

Setting and framework
The play unfolds in a late‑Victorian/Edwardian seaside milieu: Act I in a dentist’s furnished sitting‑room; Acts II–IV at the Marine Hotel (terrace, sitting room, garden at night). The confined, domestically public hotel spaces function as social laboratories where private histories confront public conventions.

Principal characters and relations
- Mrs Lanfrey Clandon: an intellectually cultivated, reformist matron (author of “Twentieth Century” treatises), morally proud and habitually guarded about personal history.  
- Gloria Clandon: her eldest daughter, proud, educated, ideologically assertive yet passionately vulnerable.  
- Dorothy “Dolly” and Philip: younger twins; bright, frivolous, socially uninhibited, embodiments of youthful modernity.  
- Valentine: a struggling young five‑shilling dentist, jocular and light‑hearted but capable of sudden seriousness; the male romantic lead.  
- Fergus Crampton: a hard, awkward, prosperous local (landlord/shipbuilder/manufacturer) who is revealed as the Clandon children’s estranged father.  
- Finch McComas: an old friend and solicitor; conciliatory, intermediary.  
- Bohun: a formidable, logical counsellor whose intervention in Act IV drives the negotiated resolution.  
- William, the waiter: a minor but morally significant figure, bridging class boundaries and supplying pragmatic common sense.

Plot synopsis (causal sequence)
Act I: Valentine extracts Dolly’s tooth. The twins arrive from Madeira; rapid, colloquial introductions expose their naivety about English conventions and the family’s suppressed paternal history. Crampton appears; comic misrecognitions ensue. Valentine, financially precarious, accepts an invitation to lunch.

Act II: At the hotel terrace, McComas discloses that Crampton may be the children’s father; confusion and offense follow. A strained lunch highlights class and temperamental clashes; Gloria’s proud reserve, Dolly’s audacity, and Crampton’s wounded claim to paternity produce volatile interactions. An impulsive kiss between Valentine and Gloria precipitates shame and attraction.

Act III: Domestic confrontation. Mrs Clandon’s past separation and refusal to discuss paternal specifics provoke Gloria’s insistence on knowing. Valentine professes love; Gloria resists on principle, then concedes emotionally but is conflicted by pride and fear. McComas arranges a conciliatory meeting with counsel (Bohun).

Act IV: Bohun orchestrates a pragmatic family negotiation. Through theatrical devices (fancy‑dress, masquerade), candid interrogation and his ruthless logic, Bohun reframes stakes: children’s temperament vs. father’s income; public name and custody issues. The crisis resolves ambiguously but sympathetically: Valentine and Gloria agree to marry with practical safeguards; social rituals (dancing, masks) restore conviviality.

Themes and techniques
The play satirizes respectability, gender politics, the clash of modern education with traditional feeling, and performative identity. Stylistically it blends farce (mistaken identities, rapid entrances), sentimental crescendos, and incisive social observation. Minor figures (the waiter, Bohun) function as ethical fulcrums, converting private pain into negotiated public accommodation. The result is a comic but ethically textured study of family, class and the uneasy modernization of intimate life.