Deborah Van Valkenburgh (born 29 August 1952; age 72) played Detective Preston in the Star Trek: Deep Space Nine third season episode "Past Tense, Part II".
Van Valkenburgh is probably best known for her role as Mercy in The Warriors (1979, with John Snyder, Tom Huff, Lynne Thigpen, and Michael Moutsatsos). In 2005, she voiced the character in the computer game based on the film. She also played the daughter of Ted Knight's character Henry Rush for five years on Too Close for Comfort.
Other TV series she's appeared in include MacGyver (1990, starring Richard Dean Anderson, with Betty McGuire), Quantum Leap (1993, with Scott Bakula and Dean Stockwell), Chicago Hope (1998, starring Jayne Brook, with Michael Bofshever, Robert Clendenin, Joanna Miles, Allan Miller, Ed O'Ross, Richard Riehle and Margot Rose), Once And Again (2002, starring Billy Campbell and Susanna Thompson, with Steven Weber).ER (2004, with Mädchen Amick, Scott Grimes, Michelle C. Bonilla and Lisa Moncure), Cold Case (2005, with Richard Cox and Lori Lively), and Criminal Minds (2006), with Maury Sterling).
Van Valkenburgh has also appeared in a number of films after her role in The Warriors including King of the Mountain (1981, with Richard Cox, Seymour Cassel, Anthony De Longis, Steve M. Davison, and Billy Hank Hooker), Streets of Fire (1984, with Ed Begley, Jr., Tamu Blackwell, Jeff Smolek, Spiro Razatos, Bernie Pock, and Vince Deadrick, Jr.), Rampage (1987, with Carlos Palomino, Donald Hotton, Patrick Cronin, David A. Kimball, and Chip Heller), One Man Out (1989, with Stephen McHattie), Mean Guns (1997, with Jerry Rector and James Wellington), Free Enterprise (1998, with William Shatner, Thomas Hobson, Lori Lively, Diana Cignoni, Gabrielle G. Stanton, Daren Dochterman and Chase Masterson), Sorcerers (1998, with Marjorie Monaghan and James Wellington), Criminal (2004, with Ellen Geer), The Devil's Rejects (2005, with Sid Haig, Michael Berryman, Tom Towles, Daniel Roebuck, Kane Hodder, and Jordan Orr), Road to Hell (2008, with Courtney Peldon), and The Trials of Cate McCall (2013, James Cromwell, Clancy Brown, Brad Greenquist, Amy Benedict, and David A. Kimball).
Van Valkenburgh has starred in some made-for-tv movies including A Bunny's Tale (1985, starring Kirstie Alley, with Stanley Kamel), Chasing Destiny (2001, with Christopher Lloyd), Firestarter: Rekindled (2002, with Malcolm McDowell), Mystery Woman: Mystery Weekend (2005, with Julianna McCarthy and Autumn Leigh Brown), Our House (2006, with Ellen Geer and Rick Scarry), Backwoods (2008, with Mark Rolston, Jamison Yang, and Blake Lindsley), The Governor's Wife (2008, with Emily Bergl), Healing Hands (2010, with Robert Curtis Brown).