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The Split is a British legal drama television series, written and created by Abi Morgan, that first broadcast in the United Kingdom on BBC One.

The first series, follows the lives of the Defoe family, who all work in divorce law for the family firm, aside from eldest sister Hannah (Nicola Walker), who works for rival family law firm Noble & Hale and youngest daughter who is a nanny.

The series co-stars Stephen Mangan, Fiona Button, Annabel Scholey and Barry Atsma.

Series 2 saw the return of the Defoe family at newly merged law firm Noble Hale Defoe, with most of the original cast confirmed.

The third and final series premiered on 4 April 2022.

For her performance in the final series, Walker received a TV Choice Award nomination for Best Actress and a National Television Award nomination for Drama Performance while The Split was nominated for Returning Drama.

The price and permutations of breaking up are the theme of The Split, a sleek new British series showing on Sundance TV.

Created by Abi Morgan, who wrote The Iron Lady and The Hour, this six-part show centers around members of the Defoe family, high-end lawyers specializing in marital issues whose own private lives are as furtive and messy as the cases they’re handling.

It stars Nicola Walker, best known in the U.S. for Last Tango in Halifax.

She plays Hannah, a principled but still high-billing divorce lawyer who’s the eye of the show’s many storms.

Married with kids to a likable husband (Stephen Mangan), Hannah is the eldest of the three Defoes.

Next in line is Nina (Annabel Scholey), who’s also a lawyer, but a somewhat more free-spirited one.

Both look after the youngest sister, Rose (Fiona Button) who’s engaged to an incredibly nice fiancé (Rudi Dharmalingam) who everyone, even Rose, thinks may be wrong for her.

The three were raised by a controlling single mother, Ruth (Deborah Findlay), a pioneer in family law who raised them to believe that it was, “us four against the world.”

At work, we watch Hannah tackle a range of cases — a famous comedian’s child custody squabbles, pre-nup negotiations between a soccer star and his fiancée, a VIP fighting with her ex over frozen embryos.

At home, the Defoe women confront the aftershocks of Ruth and Oscar’s split decades earlier, a split that shaped how each feels about marriage — an institution about which this series is actually a bit sentimental.

The show is held together by Walker, one of Britain’s best and most popular TV actors, whose teal eyes burn like lasers.

Her emotional transparency turns Hannah’s big-time lawyer into something of an everywoman who wants to do the right thing, yet finds it harder and harder.

We spend The Split wondering if, for all her sanity and good will, she, too, is going to wind up needing a good divorce lawyer.