On 4 April 2015, the BBC announced that Wallace would appear in a six-part BBC One drama series alongside Richie and would also be departing "EastEnders". In the series, Kat and Alfie visit Ireland in the "search for answers to some very big questions". Speaking about the show, Wallace commented: "I have always loved working on "EastEnders" so when I heard of this new drama to take Kat and Alfie outside of Walford, I couldn’t believe our luck. To be exploring the next chapter for Kat as well as working alongside my best mate, Shane, is a dream come true and a huge compliment." The series, "" began airing in May 2017.