Addition (2024) by Marcelle Lunam

Grace Lisa Vandenburg is a 34-year-old Melbourne mathematician reduced to tutoring high-school girls after her arithmomania derailed her academic career. Her compulsive need to count everything — three times, for accuracy — is her coping mechanism for deeper childhood trauma she has not yet faced. She lives with her imaginary confidant, Nikola Tesla. She meets Seamus, a British tradesman, in a supermarket checkout when she steals a banana from his basket to ensure she has exactly ten. Love arrives and destabilises the counts. The medication she starts taking to change strips her emotional world bare. Based on Toni Jordan’s bestselling novel — on the Australian First Tuesday Book Club reading list. Adapted by Becca Johnstone after a 14-year development process. Directed by Marcelle Lunam in her feature debut. Produced by Bruna Papandrea, Cristina Pozzan, and Steve Hutensky. Cinematography by Ginny Loane. TIFF 2024 world premiere. Australian theatrical January 29, 2026. Worldwide gross $182,339.

The producers held the rights to Toni Jordan’s novel for 14 years, through multiple director attachments and scripts that didn’t resonate, until Becca Johnstone — a journalist turned emerging screenwriter — presented an adaptation that finally worked. Lunam coined the genre “psychological romantic dramedy” at TIFF to distinguish the film from conventional romantic comedy framing. Palmer was able to “tap into her goofy side” alongside Dempsie while navigating the film’s mental health complexity. The Golden Trailer Award nomination for Best Foreign Comedy gives the film its most specific institutional positioning within the international romantic comedy circuit.

• Director Lunam regularly gives the audience Grace’s point of view, with numbers flashing across objects — a cinematographic approach that builds understanding of how Grace experiences the world without belittling her condition.

• Eamon Farren’s Nikola Tesla — Grace’s imaginary confidant rendered as a real character — is the film’s most formally original element, giving her inner life a visible and witty screen presence.

• Palmer’s performance navigating Grace’s emotional world during medication — a period where she describes her emotions as stripped bare — is the film’s most formally demanding single sequence and the one most cited as proof of her range.

• Gazettely: “Palmer doesn’t just play Grace; she lives Grace’s complicated inner world — a woman who is smart and angry at the same time, charming but limited by her own complicated mind.”

• Palmer’s red hair — her first in any role — and her Warm Bodies romantic comedy credentials give the film an immediate discovery signal for her established fanbase encountering her in her most personally invested performance.

• The OCD and arithmomania representation community gives the film a specific advocacy audience for whom accurate, non-belittling portrayals carry immediate personal resonance.

• Australian regional press: “sensitively done, the comedic writing doesn’t belittle Grace or her condition — but the screenplay doesn’t dig too much deeper than a surface narrative, with supporting cast struggling to find something meaningful to do.”

• Rotten Tomatoes: “Palmer is excellent — a vibrant cast with an ambitious conceit achieving different artistry by embracing the imperfect.” Counter-note: “Grace’s condition is never fully explored and the film lacks the tension it needs — saved by Teresa Palmer’s brilliant performance.”

• Gazettely: an impressive directorial debut transforming a possibly niche narrative into a universal story of human connection; stands out in modern romantic cinema through clever visual storytelling and a deeply moving screenplay.

• Letterboxd: Palmer genuinely great, carries the film, characters feel grounded and real — countered by “plays out like a feature-length pilot episode of a Sunday night Channel 10 series.” IMDb 6.5 from 140 viewers.

• Golden Trailer Awards 2025: Best Foreign Comedy — nominee.

• TIFF 2024 world premiere. Australian theatrical January 29, 2026. Worldwide gross $182,339.

• Marcelle Lunam — feature debut — described Addition as a “psychological romantic dramedy” and built the film’s formal identity around Grace’s OCD perspective through Ginny Loane’s cinematography.

• Teresa Palmer (Grace) — Warm Bodies, Hacksaw Ridge — gives her most internally complex performance, balancing arithmomania’s comic specificity with the trauma underneath it.

• Joe Dempsie (Seamus) — Game of Thrones — described by one Letterboxd critic as “the real standout — plays Seamus with real warmth and sincerity that makes the character incredibly endearing.” Rotten Tomatoes countered: “endlessly supportive and underwritten in a hollow way.”

• Eamon Farren (Nikola Tesla) — The Witcher — the film’s most formally inventive performance; Tesla rendered as a real presence in Grace’s apartment rather than a visual quirk.

The 14-year development and the TIFF premiere confirm institutional commitment to the material. Palmer is the film’s most reliable and most commercially necessary asset. The Golden Trailer nomination confirms the film’s international romantic comedy positioning.

Addition belongs to the neurodiversity romantic dramedy tradition — Silver Linings Playbook most prominently — in which a mental health condition is the protagonist’s defining formal architecture rather than an obstacle to be overcome through love. Lunam’s specific contribution is the refusal to resolve Grace’s arithmomania as a condition that needs fixing: the film’s most formally honest structural decision is that love doesn’t cure OCD, it complicates the person who has it.

• The medication sequence — Grace taking pills that strip her emotional world, causing the audience to grieve the loss of her vibrant self alongside her — is the film’s most formally specific and most emotionally precise departure from romantic comedy conventions.

• The arithmomania as “a complicated coping mechanism based on deeper psychological experiences” gives the film its most formally serious argument: that Grace’s counting is not a quirk but a survival strategy.

• The Nikola Tesla imaginary friend gives Grace’s interior life a visible screen presence — making the film’s most formally original choice also its most commercially accessible single element.

• Australian romantic comedy “has to contain an equal measure of darkness, because the traditional Hollywood concept of roses-and-sunshine rom-com just doesn’t sit right with the Australian-film audience.”

• Made Up Stories — Bruna Papandrea’s production company — has established a track record for character-driven Australian romantic drama (Big Little Lies, Nine Perfect Strangers executive producing credits) that gives the film its most credentialed production positioning.

• Toni Jordan’s novel is one of Australia’s most widely read contemporary novels, with its First Tuesday Book Club association giving it a built-in reader audience for the adaptation.

• OCD remains one of fiction’s most misrepresented mental health conditions — depicted as quirky tidiness rather than a psychologically complex coping mechanism — and Addition’s arithmomania-as-survival-strategy framing gives it its most formally specific representational contribution.

• The neurodiversity romantic comedy has established itself as a commercially viable genre entry since Silver Linings Playbook — Addition arrives as one of the most character-specific entries in that tradition.

• Palmer’s return to Australian theatrical production gives the film a domestic fanbase discovery pathway that her international career had previously directed elsewhere.

• The OCD and mental health advocacy communities give the film a secondary discovery audience whose word-of-mouth is specifically motivated by the representation quality rather than the romantic comedy formula.

The core audience is 25–55 — Australian romantic drama audiences who respond to the darker undercurrent the genre requires domestically, OCD and mental health advocacy communities who find the representation both accurate and non-belittling, and Palmer’s international fanbase who follow her career across both romantic and dramatic work.

Rotten Tomatoes’ most precise observation: “Addition never gives anyone else in her orbit enough air to breathe.” That is simultaneously the film’s most honest critical note and its most formally coherent decision — the film is about Grace’s interior world, and everything else is secondary by design.

Lunam delivers a debut of genuine formal sensitivity — the numbers-flashing cinematography, the Tesla imaginary friend, the medication sequence — that treats arithmomania as a complex psychological architecture rather than a personality feature. The film “certainly looks beautiful, well shot by Ginny Loane.” The supporting characters remain underdeveloped, and the screenplay prioritises emotional warmth over psychological depth — but Palmer ensures the central character justifies every minute.

Works best for viewers who respond to romantic drama that uses a mental health condition as its protagonist’s full architectural foundation rather than a character note — the Silver Linings Playbook audience, Australian drama fans, and Palmer’s international following.

The film’s most formally honest structural decision is that Grace’s arithmomania is not resolved by Seamus’s arrival or the therapy or the medication. The film “questions viewers’ expectations by showing Grace’s mathematical accuracy and mental health issues with respect and creativity.”

Lunam’s “psychological romantic dramedy” genre coinage at TIFF is the film’s most precise self-description — it signals that the film is neither pure romantic comedy nor pure mental health drama but something more formally specific than either category alone.

The arithmomania framing — counting as survival strategy for unprocessed childhood trauma rather than as endearing personality feature — is the film’s most socially specific formal contribution to OCD representation in popular cinema.

Palmer’s Grace — smart, funny, internally complex, sustaining audience empathy even at her most resistant and self-protective — is the unanimous critical consensus. Farren’s Tesla gives the film its most visually distinctive formal element. Dempsie plays Seamus with warmth and sincerity that the screenplay doesn’t fully develop but that the performance alone makes endearing.

Addition will be remembered as the Palmer film that most fully deployed her comic and dramatic range simultaneously — and as the Australian romantic dramedy that treated OCD with the precision and respect that the genre’s most commercially successful American equivalents rarely achieve.

• Golden Trailer Award 2025: Best Foreign Comedy nominee. TIFF 2024 world premiere. Australian theatrical January 29, 2026. Worldwide gross $182,339.

Addition proves that the most honest romantic dramas about mental health are the ones that refuse to resolve the condition as the price of love — and that Teresa Palmer has been waiting for a role this internally complex for the better part of her career.

The arithmomania is precisely rendered. The medication sequence is the film’s most formally honest contribution to its genre. Palmer carries every scene. Lunam’s debut shows a genuine formal sensibility that the next screenplay — one that gives the supporting characters equal architecture — will confirm.

• Movie themes: OCD as a survival strategy rather than a personality quirk, the medication that resolves the counting while stripping the person, love that complicates rather than cures, childhood trauma as the buried foundation of adult coping mechanisms, and the specific dignity of a woman who refuses to be reduced to her condition.

• Movie director: Marcelle Lunam — feature debut — coins “psychological romantic dramedy” as her genre, builds Grace’s OCD perspective through Ginny Loane’s numbers-flashing cinematography, and refuses to belittle the condition through the comedy that surrounds it.

• Top casting: Palmer’s Grace is her most internally complex performance — unanimously cited as the film’s foundation regardless of critical position. Farren’s Tesla is the film’s most formally inventive element. Dempsie’s Seamus is warm, sincere, and underwritten.

• Awards and recognition: Golden Trailer Award 2025 Best Foreign Comedy nominee. TIFF 2024 world premiere. Australian theatrical January 29, 2026. Worldwide gross $182,339.

• Why to watch: The Australian romantic dramedy that treats arithmomania as a full psychological architecture rather than a personality feature — with Palmer’s most complex performance, Farren’s Nikola Tesla as an imaginary confidant rendered as a real screen presence, and a medication sequence that is the film’s most formally honest contribution to its genre.

• Key success factors: Palmer’s career-best performance range plus Farren’s Tesla as the film’s most distinctive formal element plus Lunam’s non-belittling formal sensitivity plus Ginny Loane’s visual storytelling plus the Toni Jordan source novel’s established Australian readership plus Made Up Stories’ production credibility.

• Where to watch: Australian theatrical from January 29, 2026. Check JustWatch for streaming availability.

Addition earns its emotional impact through Palmer’s sustained commitment to Grace’s full psychological complexity — and through Lunam’s formal discipline in refusing to resolve a condition the film understands was never the problem to begin with.