Gripping drama Doctor Foster returns to screens this autumn and promises to be just as compulsive viewing the second time around.
Suranna Jones, Bertie Carvel and Jodie Comer are all back along with some new faces for series two.
The story picks up two years after GP Gemma Foster discovered husband Simon’s affair with their friends’ daughter Kate and left him, taking their young son with her.
Viewers could have been forgiven for thinking that all was nicely wrapped up at the end of series one as Simon and pregnant girlfriend Kate began their new life together and Gemma began to pick up the pieces.#
But writer Mike Bartlett has promised that “no-one comes through hell unscathed”, leaving us wondering what the after-effects of her marriage breakdown will mean for Gemma and how she will exact her revenge.
Plot details are being kept top secret, so in the meantime, get to know the stars of this riveting series.
Suranne Jones – Gemma Foster
The lead character started series one believing that she was living the perfect life – until she discovered a blonde hair on her husband’s scarf and her world began to fall apart.
Everything in the original series led up to Gemma confronting Kate and her parents Susie and Chris Parks during a tense dinner party at their house, but now the secret is out and she has left Simon, what’s next for the GP?
In the sequel, viewers will see the fallout from a bitter split and the relationship between two people who hate each other but are still trying to raise a child together.
Jones is famous for her role in Coronation Street as Steve McDonald’s ex-wife Karen, which she played from 1997 to 2004.
After leaving the cobbles, she went on to land a starring role in detective series Scott & Bailey alongside Lesley Sharp, with the programme running for five years up until 2016.
Doctor Foster has taken a while to return after the first run because Jones welcomed her first child with husband Laurence Akers in March 2016.
Bertie Carvel – Simon Foster
Property developer Simon was having something of a mid-life crisis when we last saw him in 2015.
Living with his pregnant new girlfriend and still having to pass his ex Gemma in the street every day looked all kinds of awkward, which will surely have intensified in the two years in between.
Simon successfully duped his former wife into believing that he was the ideal husband, even enlisting her friends in the pretence, so plenty of viewers will be hoping to see him get his comeuppance this series.
Carvel is best known for his work in musical theatre and won an Olivier Award in 2012 as best actor in a musical for his portrayal of Miss Trunchbull in Matilda The Musical in the West End.
Viewers may also have seen Carvel on screen in the film adaptation of Les Miserables, where he played Bamatabois.
As well as his starring role in Doctor Foster in 2015, he also found small-screen fame as magician Jonathan Strange in the BBC One adaptation of Susanna Clarke's novel Jonathan Strange and Mr Norrell.
Jodie Comer – Kate Parks
Other woman Kate may not have made many fans during series one of Doctor Foster, but that could all be about to change, unlikely as it seems.
This time, viewers will get the chance to find out more about Kate and her side of events, rather than seeing a few snapshots of her sneaking around with Simon.
It’s possible that reality could be quite different to the image of Kate we’ve been given up to this point, so look out for some surprising revelations about the character.
Comer might be more recognisable to younger viewers as one of the stars of My Mad Fat Diary, where she played Chloe Gemell.
She appeared alongside Michael Palin in the 2014 mystery mini-series Remember Me, where she played a carer that his character became close to after moving into sheltered accommodation.
Other programmes viewers may have seen Comer in include Thirteen, in which she starred as a woman who had escaped from being imprisoned in a basement for years, and a TV adaptation of Lady Chatterley’s Lover in 2015.
Neil Stuke – Chris Parks
Chris’s role extends to being more than just the dad of Simon’s much younger mistress – he is also a dodgy investor in Simon’s business.
As well as exposing her husband’s affair, Gemma also discovered that his property development business was in financial trouble and that Chris was a mystery investor who had a conflict of interest.
How will that affect the wealthy Parks two years on, and what will Chris and Simon’s relationship be now that Kate is involved?
Stuke’s most recognisable role was in 90s sitcom Game On where he played Matthew, but his other long-running parts have been in more serious shows.
He had a stint in The Bill between 2006 and 2007, and also featured in legal drama Silk as Billy Lamb.
Sara Stewart – Susie Parks
At the beginning of series one, things looked pretty rosy for well-off, glamorous Susie.
But now that she has had her eyes opened to her daughter’s controversial relationship and her husband’s dodgy business dealings, what will her future be?
It’s possible that life could be very different now for Susie and it will be interesting to see whether she has any continuing friendship with Gemma.
Stewart has appeared in a number of well-known TV series and films, including Fresh Meat, Sugar Rush and a TV adaptation of the Rebus books.
Her film credits include Batman Begins, The Best Exotic Marigold Hotel, Philomena, and Transformers: The Last Knight.
Sian - Sian Brooke
The Sherlock star shocked us all this year, when she turned out to be the surprise third Holmes sibling in the BBC drama's epic finale. She's playing another mysterious character in Docter Foster, cast as new colleague for Gemma, Sian.
Details are being kept under wraps of her role in the show, but we can't wait to see how she fits in with Gemma, Simon and Kate's tangled web.
Martha Howe-Douglas - Becky
Simon's PA kept his secrets for him in series 1 and she will return in series 2, but will she be friend or foe for Gemma?
Thusitha Jayasundera - Ros Mahendra
Writer Mike Bartlett has revealed that Gemma's friend Ros, who betrayed her in series 1, will have her own storyline arc in the second series.
Tom Taylor - Tom Foster
Gemma and Simon's son was caught up in the storm of series 1, but how will he have coped with the fall-out of his parents split. And how will he feel about his dad returning to town in series 2?
In episode one he ran away from his mom to move in with his dad, but we don't know what has prompted this sudden change of heart.
Tom's downward spiral, a result of his parents' twisted and dark relationship is at the centre of the drama in series two. Is he slowly turning into a version of his father? And what has caused this change of heart?
Prasanna Puwanarajah - James
Gemma has a new boyfriend in series 2 - the mysterious James. Will it be true love for Gemma, or is just a distraction as she attempts to recover from the fall-out from series 1.
One online theory suggests that this new love interest could be another old pal of Simon's, who is spying on Gemma for him. We prefer to hope that there are some nice men in Parminster.
The Bakers (Victoria Hamilton and Adam James)
Neil and Anna still live opposite Gemma. In the last two years they’ve worked hard to save their marriage. Neil still works in accounting and enjoys his comfortable, child-free lifestyle. But one thing has changed – his commitment to Anna.
After years of being serially unfaithful he has made a promise not to cheat, and they are happily discovering new activities together in a renewed relationship. Anna meanwhile has become even closer to Gemma (despite Gemma herself being one of Neil’s past liaisons). They meet often to put the world to rights over a glass of wine.
Tom also feels Anna is someone he can talk to and confide in. But if conflict between Simon and Gemma erupts, will the Bakers be sucked in again?
Episode 4 preview
Simon feels confident that he and Kate can finally live securely, free from Gemma's shadow. But can Kate really trust him?
Doctor Foster airs Tuesdays at 9pm on BBC One.
Catch up on BT TV via the BBC iPlayer app.
Buy and own series one on BT TV Store now.