Scott Bakula as Harry D'Amour

Kevin J. O'Connor as Philip Swann

Famke Janssen as Dorothea Swann

Joel Swetow as Valentin

Daniel von Bargen as Nix

Barry Del Sherman as Butterfield

Joseph Latimore as Caspar Quaid

Sheila Tousey as Jennifer Desiderio

Vincent Schiavelli as Vinovich

Ashley Tesoro as Young Dorothea

J. Trevor Edmond as Young Butterfield

Wayne Grace as Loomis

Jordan Marder as Ray Miller

Susan Traylor as Maureen Pimm

Joanna Sanchez as Clemenzia

McNally Sagal as Detective Edison

Danny Woodburn as Forensic Photographer

Johnny Venokur as Tapert

Barry Shabaka Henley as Dr. Toffler

Keith Brunsmann as Snakeman

Mikey LeBeau as Exorcised Boy

Jimmy Shaw as Hotel Bellboy

Daniel Edward Mora as Stage Technician

Billy McComb as Walter Wilder

Lorin Stewart as Billy Who

Bergen Williams as Nurse

Carrie Ann Inaba as Dancer

Sebastian La Cause as Dancer

Jason Yribar as Dancer

Luca Tommassini as Dancer

Ken Davitian as Swann Audience Member (uncredited)

G. Larry Butler as Bar patron (uncredited)

Crystal Lujan as Cult Member (uncredited)

Barbara Patrick as Lead Female Cultist