Mama Jonas Blue Feat. William Singe
Watch Justin Bieber's controversial cameo in 'CSI'
The show, which aired last night in the US saw Justin reprising his role as troubled teen Jason McCAnn.
But, as this clip shows, his character's murderous intentions do not end well.
Justin Tweeted 'Everyone back home make sure to tune in to CSI tonight! Jason McCann is BACK!! #BADASS.'
Watch the clip below.