Grant Denyer will tonight appear on the incredible SBS show ‘Who Do You Think You Are’ where he will discover all about his family past.

And he told Will & Woody all about one of the stories that is seriously intense.

Click play to hear Grant reveal all!

Want more? Here's one of our fave moments from Jase & PJ – they’re always up to something! Weekdays from 6AM on KIIS 101.1!