Executive producer Dominic Treadwell-Collins announced earlier this month that Kat and Alfie would be back in time for the festive season, the first time they've been seen in Albert Square since departing in May following a lottery scratch card win.
"Christmas in Walford is always the perfect time for uncomfortable family reunions – and Kat and Alfie’s brief return will lead to tears, laughter… and a mountain of secrets being unearthed for the Slater family.
"As Kat and Alfie hold on to each other and their marriage, the discovery that Kat has a secret son will lead to seismic waves through the Slaters – and ultimately lead to the Moons realising that the answers to so many questions lie across the sea in Ireland," said the show boss.
Speculation has been rife as to the identity of Kat's son, with one prominent theory being that he could in fact be Sean Slater (Rob Kazinsky), who was last seen in 2009.
All that's known about future events, though, is that - following their brief return later this year - Kat and Alfie will next be seen in an as-yet-to-be-named six-part spin-off set in Ireland and to be broadcast in 2016.
You can watch a 60-second rundown of next week's episodes of EastEnders below.
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