Hillner and Foy's respective agents confirmed to Playbill On-Line that both actors will return to Broadway Oct. 22 in the hit ABBA musical at the Winter Garden Theatre. Hillner will replace David W. Keeley as Sam Carmichael, and Foy will assume the role of Rosie, created on Broadway by Tony winner Judy Kaye. That day, most of the original cast — including Louise Pitre (Dee Hoty will step into her role of Donna Sheridan) — will also depart the production. John Hillner's Broadway credits include Crazy for You, Footloose, Big, Zorba, Woman of the Year, They're Playing Our Song, Little Me and Company. Harriett D. Foy appeared on Broadway in Stephen Flaherty and Lynn Ahrens' Once on the Island, and her Off Broadway credits include Reunion, Dinah Was, Inside Out and Fire's Daughter.

Mamma Mia! — featuring the tunes of ABBA — plays the Winter Garden Theatre, which is located in New York City at 1634 Broadway. For tickets, call (212) 239-6262. Mamma Mia! is on the web at http://www.mamma mia.com.