[2] After her official debut at just sixteen years of age under the direction of Giorgio Strehler in The Cherry Orchard,[2] she tied herself romantically and artistically to film and theatre director Gabriele Lavia,[3] acting in his theatrical performances mostly strong female characters like Jocasta, Lady Macbeth and Ophelia.

Guerritore continued her work with other directors, like Giancarlo Sepe, in Madame Bovary,[5] Carmen,[6] and The Lady of the Camellias.

[4][7] Beside the stage career, Guerritore works on television and film, starting in 1976 along Marcello Mastroianni in Signore e signori, buonanotte.

[11][12] She stayed far away from television for 17 years and came back on screen RAI in 1997 with the title role in Costanza,[13] and in 1999 in Mario Caiano's L'amore oltre la vita.

[15] Lavia directed her in many movies, often erotically toned, including Scandalous Gilda (1985), Evil Senses (1986) and a Sicilian film by Giovanni Verga, La lupa (1996).