Kat Chapman will reveal a dark secret about her past in the wake of the accusations regarding her boyfriend Nate Cooper.
Kat (Pia Miller) will do her best to support Nate after Billie falsely accuses him of sexual assault, but will find her loyalties divided due to the nature of her job as a policewoman.
However, Kat will start to act strangely when she learns about a text found on Billie's phone, which is supposedly from Nate, despite the fact that he had nothing to do with it.
TV Week reports that the couple's relationship will come under serious strain when Nate subsequently accuses Kat of doubting his innocence, prompting Kat to let him in on a big secret.
Kat will eventually tell Nate why she jumped to conclusions as she comes clean about her troubled past, but what will she reveal?