EW.com report that Ambrose will take the role of Jilly Kitzinger – “a sweet-talking PR genius with a heart of stone who’s just cornered the most important client of her career… and maybe of all time” – in seven of the series’ 10 episodes. Ambrose played Claire Fisher in all 63 episodes of Six Feet Under.

Ambrose joins returning regulars John Barrowman, Eve Myles and Kai Owen, alongside previous announced new cast members Mekhi Phifer, Alexa Havins (All My Children), Bill Pullman (Independance Day) and Dichen Lachman (Dollhouse).