Phoebe Tonkin has been cast in The Vampire Diaries.

The Secret Circle star will appear in the third episode of the fourth season of the CW drama, TV Guide reports.

The Australian actress will play the character of Hayley, an old friend Tyler (Michael Trevino) who is described as "wild, sexy and very free-spirited".

The 23-year-old played Faye Chamberlain on The Secret Circle until the show's cancellation in May.

Tonkin previously starred in Home and Away.

The Vampire Diaries returns to The CW network in the US on Thursday, October 11.