Casting calls for Jackson's replacement began during the summer of 1979. Several up-and-coming actresses were considered for the role, including Barbara Bach, Connie Sellecca, Shari Belafonte, "The Price Is Right" model Dian Parkinson, and newcomer Michelle Pfeiffer. ABC producers auditioned Revlon Charlie perfume model Shelley Hack and cast her as Jackson's replacement. Producers at Spelling-Goldberg were quoted as saying, "We feel that Shelley Hack has exactly the talent, style, and intelligence we were looking for." Producer Spelling loved the idea of the headline "The Charlie Girl Becomes A "Charlie's Angel"". Hack debuted in the fourth-season premiere as Tiffany Welles, an elegant police graduate from Boston. In hiring Hack, Spelling's priority for season four was to "bring back the glamour" while ABC hoped Hack's sophisticated personality would bring an interesting new mystique and intrigue to the series. However, after an initial spike in the ratings, they began to erode, so in an attempt to revitalize declining ratings and regain popularity, ABC released Hack from her contract in February 1980. In an interview with "People", Hack said, "They can say I didn't work out, but it isn't true. What happened was a network war. A business decision was made. Change the timeslot or bring on some new publicity. How to get publicity? A new Angel hunt. Who is the obvious person to replace? I am—the new kid on the block." Hack later stated "I never expected to be there more than a year and I wasn't. I did my year and I moved on."