The late night spinoff will debut the first 12 minutes of its latest run on the E4 website at 7.30pm tomorrow night (Friday, September 14).
Emmett Scanlan recently teased that viewers will discover "brutal" details about his character Brendan Brady's past in the upcoming episodes.
On flashback scenes involving Brendan, Scanlan said: "They reveal why Brendan's the way he is - it's the missing piece of the jigsaw puzzle.
"Ever since he arrived in Hollyoaks two years ago, there have been questions about his murky past and now we'll get the answers. The truth is shocking and brutal."
Jorgie Porter has also declared that Hollyoaks Later shows more of her character Theresa McQueen's bad girl side.
On Theresa's actions in the series, she confessed: "I thought, 'Oh my goodness, that's so out of character!' It was quite hard to deal with such a sudden change.
"I thought, 'Oh no, everyone's going to hate her now. How am I going to be a badass and still be loved?'"
Hollyoaks Later returns to E4 on Monday, September 17 at 10pm.
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Photo gallery - Hollyoaks Later picture preview:
Copyright: Lime PicturesWatch a promo for Hollyoaks Later below: