The Other One

Catherine 'Cathy' Walcott and Catherine 'Cat' Walcott only discovered one another existed after their dad dropped dead. Having finally come to terms with the fact they are sisters, they are now reeling from the news that they also have a brother, Callum - and that Cathy just snogged him. As Cathy struggles with the ethics of fancying a sibling, Cat is determined to welcome Callum to the family, while Callum isn't sure what family means any more.

Cat's mum, Marilyn, is furious to learn she wasn't Colin's only mistress and sets about tracking down his other secret lover, Angela, starting a chain of events that nobody expected. Meanwhile, Cathy's mum, Tess, decides to have some fun with her late husband's legacy and embarks on an ill-advised luxury spending spree.

Cat reignites a feud with rival delivery driver Patience, putting her job on the line.

Meanwhile Cathy's surprising marital status causes trouble at her workplace, and as she finds herself unfairly passed over for a promotion by boss Jennifer, her frustration ends in humiliation and a head injury.

Angela is fast turning into the houseguest from hell for Marilyn, as she boozes away the grief of being rejected by her husband and her son. Plus with no sign of Colin's elusive pension money, Tess is having very little fun on her singles holiday in Morocco.

Cat & Cathy go to an adult maths GCSE class where the sexy teacher causes ructions. Tess takes a job in the worst place possible, and Angela resorts to kidnap to win back Peter.

Cathy is excited to introduce her siblings to lambing season at Auntie Dawn's farm, but Tess brings along an unwelcome visitor and Cat brings an unwise gift.

In a bid to heal his rift with Angela, Callum is lured to an eventful Northern Soul Revival. Next day, their Dad Colin still has surprises for his family from beyond the grave.