Actress Jessica Biel will return for the finale of 7TH HEAVEN next month (MAY06). Biel, who played eldest daughter MARY CAMDEN on the show, will reprise her role in the final episode of the series. The last show will revolve around the wedding day of SIMON CAMDEN, played by David Gallagher. Barry Watson, who played MATT CAMDEN, will also return for the finale. 7th Heaven is ending after 10 seasons, making it the longest-running show on the US WB network.