Although we’re still not clear what Julia Stiles will be doing in the upcoming season of Dexter, we understand why the actress is “giddy with excitement” over her new role.

Despite being “horrible with gore,” Stiles signed on to play “Lumen” – a woman that’s being described as “psychologically and physically damaged.” (As if we’d expect anything less from a character on that show.)

So how will Lumen figure into all of Dexter Morgan’s mounting problems? Find out when the program returns to Showtime on September 26.