From teevee.org's April 1st page -- TV Review: "Exposé" Shows Plenty, Doesn't Reveal Enough:
“Exposites,” as loyal viewers of the American-Australian coproduction dub themselves, have been waiting for nearly more than two years for some resolution to the fourth-season cliffhanger, in which rookie recruit Corvette (Nikki Fernandez) was murdered by the series’ recurring villain The Cobra, revealed at last as the girls’ suave nightclub-owning boss, Mr. LeShade (Billy Dee Williams). Production on the fifth season of this critic-proof guilty pleasure was delayed by the sudden, tragic death of creator and executive produer Howard L. Zukerman shortly after the fourth season wrapped. Mere weeks later, Ms. Fernandez, who reportedly had no plans to return to the show despite her character’s popularity with fans, boarded the notorious Oceanic Airlines Flight 815.