Netflix is turning its attention to one of Ireland’s most beloved authors with Grown Ups, an upcoming eight-episode series adapted from Marian Keyes’ best-selling novel. The project promises something darker and more emotionally raw than your typical family drama — a slow-burn exploration of grief, secrets, and the price of loyalty that could rival shows like Broadchurch and Happy Valley.

What Grown Ups Is — And Why It Matters

Set in south Dublin, Grown Ups tracks the lives of the Casey family, a close-knit but turbulent clan bound by love, resentments, and unspoken histories. Everything seems under control until the “good son” dies unexpectedly — a tragic event that triggers a ripple effect of guilt, betrayal, and revelation.

Keyes’ original novel focuses on siblings Johnny, Ed, and Liam navigating adulthood, marriage, missteps, and memory. In the Netflix version, the showrunner and production team have tweaked some elements — but the emotional core remains: how do you face the skeletons in your family closet when grief forces them all into the open?

With themes of loss, identity, and the harsh truths we hide from one another, Grown Ups has the potential to go far beyond melodrama.

The Cast (And Why It’s a Big Deal)

Netflix has assembled an impressive roster for Grown Ups:

Sarah Greene (from Bad Sisters, Normal People) plays Jessie, one of the key Casey siblings.

Barry Ward is Johnny, married life tested by old wounds.

Robert Sheehan takes on Liam, whose flaws and charm mirror the novel’s complexity.

Aisling Bea will play Cara, connected to the Casey family in surprising ways.

Adrian Dunbar (famously from Line of Duty) takes part in a pivotal role as Canice, a figure whose loyalties and history carry weight in the family’s unraveling.

Together, this ensemble will bring Grown Ups to life with all the emotional complexity and moral gray zones fans of serious drama crave.

What to Expect — Style, Tone & Storytelling

Slow burn, emotional crescendo — This is not a twist-for-twist thriller. It’s about watching small fractures grow, trust erode, and hidden truths claw their way into daylight.

Interwoven relationships & unreliable memories — Expect the characters to circle their pasts, misremember things, protect each other, and betray each other in equal measure.

Rooted in place & culture — The Irish setting, accents, and family dynamics won’t be window dressing. The way people speak about shame, obligation, and faith in Dublin will matter.

Heartline reveals, not cheap shocks — Keyes’ writing is known for humor laced with heartbreak. The adaptation will likely honour that balance: devastating plotlines delivered with emotional honesty.

Where the Show Is Now & What Comes Next

Production for Grown Ups has already begun in and around Dublin, with Netflix and See-Saw Productions leading the charge. The author Marian Keyes is onboard as executive producer, ensuring the adaptation stays respectful to the spirit of the book. Filming is ongoing, and a 2026 release is expected.

Though no official release date is confirmed yet, the momentum is strong: with the cast revealed and shooting underway, the show is clearly entering its final stages.

Why Grown Ups Could Be Netflix’s Next Breakout

Genre hybrid appeal — It blends family drama, mystery, and psychological tension. That gives it crossover potential beyond “just another book adaptation.”

Star power with emotional depth — The cast includes actors who know how to carry weighty drama (Dunbar, Greene) while delivering nuance.

Built-in fanbase & literary pedigree — Keyes’ readership is loyal, curious, and vocal — they’ll be watching.

Emotional resonance over spectacle — In a crowded streaming world, shows that make us feel deeply tend to linger in conversations.

If all goes well, Grown Ups may do more than just entertain — it could become the next benchmark for Irish storytelling on streaming platforms. Fans are already comparing it to Broadchurch in tone and ambition, but Grown Ups has its own voice: raw, human, and unafraid to show how family love can wound as much as it heals.