Rainie Cross (also Branning and Highway) is a fictional character from the BBC One soap opera EastEnders, played by Tanya Franks. Introduced as the drug-addicted sister of established character Tanya Branning (Jo Joyner), Franks has had three separate guest stints in 2007 (two episodes), 2008 (four episodes) and 2010 (seven episodes) and between 12 April and 8 December 2011. Rainie returned on 16 June 2014, when she was revealed as Ian Beale's (Adam Woodyatt) mystery phone contact, having been with Ian on Good Friday, the night of Lucy Beale's (Hetti Bywater) murder (see "Who Killed Lucy Beale?") but departed again not long after. In January 2015, it was confirmed that Rainie would return for the conclusion of the "Who Killed Lucy Beale?" storyline. Rainie made another guest appearance on 19 January 2018 and returned full-time to the show on 24 April 2018, now married to her former brother-in-law, Max Branning (Jake Wood). In June 2022, it was announced that Franks had left the show, with Rainie's final episode airing on 29 June 2022. She reappeared for a brief stint on 23 until 25 August 2022 to coincide with the departure of her husband Stuart Highway (Ricky Champ).

During her appearances Rainie has had sex with brothers Max, Jack (Scott Maslen) and Derek Branning (Jamie Foreman), joined Max in a custody battle with her mother Cora Cross (Ann Mitchell) over Max and Tanya's granddaughter Abi Branning Jnr, feuded with Ben Mitchell (Max Bowden) and kidnapped Abi. Rainie's other storylines have included a custody battle between Max and the Beale family over Abi, another drug relapse and addiction to painkillers, and her imprisonment for assaulting Kathy Beale (Gillian Taylforth), taking over the local funeral parlour alongside her husband Stuart, hiring Bernadette Taylor (Clair Norris) as a surrogate for her and Stuart leading to the birth of their son Roland, and supporting Stuart through his breast cancer diagnosis.

Described as "the slightly broken sister who's one step away from a vodka bottle", Rainie's storylines have often centred on her addictions to drugs and alcohol. During her seven-episode guest stint in 2010, Rainie was involved in a highly criticised crack cocaine storyline with Phil Mitchell (Steve McFadden). It was branded "inappropriate" and "horrid" by the Daily Record. EastEnders star Natalie Cassidy (who played Sonia Fowler) also criticised the storyline, saying she was "shocked", but Franks defended the storyline, though she herself was not surprised that viewers had complained.

Development Introduction and characterisation The character originally appeared for two episodes on 2 and 3 August 2007, and then returned for four episodes between 7 and 11 January 2008. Franks was asked to return again later in 2008 but could not make it, so Franks thought Rainie would not be seen again. She returned for the longer stint in 2010, starting on 3 August. Franks did not expect to be asked to return in 2010, and said the call came as a surprise. She said it was "ideal" because it fitted in with another acting job she was undertaking at the time. She commented that Rainie would be "unlikely to return without stirring up a bit of trouble". Rainie returned again on 12 April 2011 as a regular character, for Tanya's wedding to Greg Jessop, along with Tanya and Rainie's mother Cora, where Cora tries to build bridges between the sisters.

In April 2011, it was reported by The Sun that Rainie would have a one-night stand with Jack Branning on 6 May 2011 after he discovers his son is dead and she comforts him. In May 2011, it was announced that Cora would return to the series, and executive producer Bryan Kirkwood said he was "keen to establish the Cross women—Rainie completes the mix as the slightly broken sister who's one step away from a vodka bottle." Rainie has been described as "troublesome" and "troubled". On her official BBC character profile she is described as sly, manipulative and ruthless, and that she "spells trouble with a capital T!". It finishes by saying, "But behind the wild partying, Rainie is a lost soul with a soft, vulnerable side that yearns to get her life back on track and impress her older sister Tanya."

Notable relationships Phil Mitchell Rainie's relationship with Phil Mitchell (McFadden) was first explored during her stint in 2010. Rainie and Phil were to be involved in a storyline involving the taking of crack cocaine. Discussing her return in 2010, she said she was pleased to be working closely with McFadden as they had not worked together. Franks explained that after being thrown out of the house by Tanya's ex-husband Max, and moving in with Phil that, "it gets quite dark and dirty, really. Phil and Rainie are two people who meet at a point in their lives where they both see something equivalent in each other. He offers her something that she wants, and that is a place to be, while she has something that he wants, and that's drugs—so it's a match at that time." Franks was given advice from the charity DrugScope on how to act the part and also undertook some of her own research, and she said she believed the scenes to be very realistic. She wanted the drugs storyline to help people, saying, "If there are people who have a drugs problem, or an addiction problem of any kind really, they might watch something like this and it could trigger something in their mind that is relevant to them, or someone that they know. Hopefully it could make people think twice about carrying on with that, and perhaps look into getting some help. The organisation that we worked with, DrugScope, gives a lot of help and advice for people with drug addictions. I think it can be hugely helpful when a show as popular as EastEnders does something like this." She also stated that if EastEnders "has saved one life by putting this story out it's been worth it. The whole point of soaps is to reflect a certain amount of everyday life. Some of it is going to be light entertainment, some isn't."

Tanya Branning Rainie's relationship with Tanya has always been fractured, though Rainie tries to resolve the tension with Tanya during her return in 2011. When Rainie was first announced on 13 July 2007, it was said Rainie was said to "[drag] up a past which Tanya would rather forget". Rainie persuades Tanya to let her stay and forgive her and then going back on the promise, which leads Rainie to be kicked out. When Franks returned in 2010 she said "she was disappointed not to be working with Joyner this time." On her return to for Tanya's wedding, a spokesperson said, “Tanya soon softens towards Rainie and her mother but will the harmony last between all three women or will past problems cause the women to Cross swords once again?”. Franks has commented that she is excited about exploring the family dynamic between the Cross ladies in upcoming storylines and her future in EastEnders. Joyner said that Tanya would forgive Rainie for her past actions. In an interview with Digital Spy, Kirkwood said that he was 'delighted' at the expansion of Tanya's family and that "The new characters are excellent additions to a cast that's already very strong."

Reintroduction (2014) Franks returned to the role of Rainie Cross for a stint on 16 June 2014. Her return was kept a secret by the cast and crew of EastEnders, and followed the surprise returns of Laurie Brett, Nicholas Bailey and Emma Barton as Jane Beale, Anthony Trueman and Honey Mitchell respectively. All of these returns were under new executive producer Dominic Treadwell-Collins.

Rainie was reintroduced as part of the "Who Killed Lucy Beale?' storyline, a story that began in April 2014 when Lucy Beale (Hetti Bywater) was murdered, and climaxed as part of the 30th anniversary celebrations of EastEnders in February 2015.

Reintroduction (2018) On 18 January 2018, it was announced that Franks would reprise her role of Rainie. On her return, Franks stated: "It's like never having been away. I love working with everyone at EastEnders. With John Yorke at the helm at the moment, the show is in good hands and I'm excited to explore the next chapter in Rainie's journey." It was also revealed that Rainie would return for one episode later in January and would return for a full-time return later in the year. Rainie returned for one episode on 19 January 2018. Rainie returned in the episode broadcast on 24 April 2018.

Storylines 2007–2008 Rainie first appears at her sister, Tanya Branning's (Jo Joyner) house claiming that she is no longer using drugs but Tanya catches her attempting to inject heroin and gives her a choice to take £500 and never see Tanya or her children again, or stay the night and get help with her problems. Rainie leaves with the money without Tanya's knowledge. Ignoring Tanya's ultimatum, Rainie returns to Walford in January 2008. Tanya is in an emotional state, having recently split from her husband, Max Branning (Jake Wood), following his affair with his daughter-in-law, Stacey Branning (Lacey Turner). Repentant, Rainie tells Tanya that she has stopped using drugs and has kicked her habit; she pledges to stay in Walford to support her sister through her break-up, proving that she has changed. She gives Tanya back the £500 that she stole from her and tries to build her relationship with Tanya. Tanya temporarily lets Rainie stay, but she tests positive for Marijuana. After an argument, Rainie leaves Walford. It is later revealed by Max to Tanya in October 2008 that Rainie is living and working as a barmaid in Nottingham.

2010–2011 Rainie returns to Walford in 2010 and tells Max she is clean and sober, and asks Max for Tanya's phone number. Tanya's daughter, Abi Branning (Lorna Fitzgerald), wants Rainie to stay and Max agrees. She steals money out of Max's sister Carol Jackson's (Lindsey Coulson) purse, which she uses to buy crack cocaine. Max catches her with the drugs and throws her out. She starts looking for her drugs when a drunken Phil Mitchell (Steve McFadden) approaches, finds Rainie's crack cocaine and is tempted to try some after she says it helps her block out her memories. Phil and Rainie get high at Phil's home. Rainie goes to get more drugs when Phil steals money from The Queen Victoria pub, but is mugged by a drug dealer. Phil's girlfriend Shirley Carter (Linda Henry) offers to help him get clean but throws Rainie out of the house, calling her pathetic.