Guest Stars Mark Haining as Mort Tubor Maree Cheatham as Mary Robeson Emily Ann Lloyd as Betsy Ewing Rhianna Janette as Meg MacKenzie Joseph Cousins as Bobby Ewing II Felicity Waterman as Vanessa Hunt Boyd Kestner as Alex Barth Tara Marchant as Toni Fields J.C. Quinn as Zack Co Starring Carlos Cantu as Carlos