Heigl had auditioned for all three of the show's female leads (the other two roles eventually went to Shiri Appleby and Majandra Delfino) before she was finally cast as Isabel, an alien human hybrid.
=== Vzpon k slavi (1999 - 2004) ===v letu 1999 je Katherine Heigl prejela veliko pozornosti s strani javnosti, ko je sprejela vlogo Isabel Evans v znanstveno-fantanstični televizijski seriji "Roswell".