Jekyll & Hyde, the Broadway musical about an infamous injection, will get a new injection of life Jan. 25 when rocker and soap star Jack Wagner, a heartthrob on TV's "Melrose Place" and "General Hospital," joins the company in the title roles.

Also new to the gruesome tuner by composer Frank Wildhorn and librettist Leslie Bricusse will be Andrea Rivette as sweet Emma Carew and Coleen Sexton as saucy prostitute (or "nightclub singer" as she's called in a statement) Lucy. Rivette is fresh from the national tour of J&H, and Sexton is in the current Broadway ensemble of J&H.

They replace exiting stars Robert Evan, Anastasia Barzee and Luba Mason, respectively, who leave Jan. 23.

Kate Shindle, Miss America 1998, recently joined the ensemble and understudies Lucy.

Wagner, expected to lure his loyal TV fans to the legit stage, appeared as Dr. Peter Burns on "Melrose Place" and as Frisco Jones on "General Hospital." His credits include regional theatre and national tours, and a hit single, "All I Need." At the Plymouth Theatre, Robert Evan succeeded Tony Award nominee Robert Cuccioli in the title roles of the musical thriller by lyricist librettist Bricusse and composer Wildhorn.

The musical opened on Broadway April 28, 1997, after years of regional development, tours and record releases. Business for the dark show, drawn from the novel by Robert Louis Stevenson, has been bolstered by a legion of fans who have been called "Jekkies." The show exceeded 1,000 performances in September 1999.

A revised national tour is currently on the road, a German staging is a hit, and a London version is in the works.

Lauded classics director Robin Phillips (an alum of Canada's Stratford Festival) has director credit for Broadway's Jekyll & Hyde.

The show was conceived for the stage by Steve Cuden and Wildhorn and developed by Alley Theatre in Houston, where Gregory Boyd directed, and 5th Avenue Musical Theatre and Theatre Under the Stars.

For ticket information, call (212) 239-6200.

-- By Kenneth Jones