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About me

I defend persons accused of assautls of an especially sensitive nature--sexual assault, child abuse, domestic violence, and elder abuse.

This has been the focus of my work since 1996. I've obtained many trial victories and many victories without trial for those accused of these assauts. I've also lectured and written extensively on legal issues relating to child abuse and sexual assault, and I've served on child abuse task forces appointed by government leaders.

While most of my work is in Washington state, I've also handled cases in other states and am glad to go where I am needed.

I've practiced law since 1981, first as a prosecutor, and since 1984 in private practice. I've been recognized several times as a "Super Lawyer" by Washington Law & Politics magazine.

Please visit to learn more about my office and about the defense of those accused of sexual assault, child abuse, domestic violence, and elder abuse.



Languages spoken: French, Italian, Spanish

Practice areas


  1. Child Abuse: 75%
    21 years
  2. Sex Crime: 20%
  3. Domestic Violence: 5%


Payment types:

Cash, Check, Credit card

Attorney endorsements

7 total 

Are you an attorney? Endorse this lawyer

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    I heartily endorse David. I referred a good client of mine to him. The matter was quite complex in that it required an understanding of my client and his deficits and of our unique community. David did an outstanding job, not only understanding them but used them to obtain an excellent job for my client. I would not hesitate to refer to him again.


    Ralph Maimon Car accident Attorney
    Relationship: Worked together on matter

  • No photo

    I met David Marshall at the National Child Abuse Defense Conference in Las Vegas several years ago. David and I were about to begin work on a sex abuse case together, and he was also attending the conference. I learned that he didn’t just attend the conference; more than once he has been on the faculty. The case went to trial twice, and gave me an excellent view of David’s approach, preparation, and skills. From the beginning he was careful and thorough. He looked at the case from every angle, and his preparation was meticulous. In court David was excellent. Working with him was much like taking a class; I found myself taking notes on approaches and tactics I wanted to use myself. At all times he was professional and a gentleman.


    Sunil Ramalingam
    Relationship: Worked together on matter

Contact info

The Marshall Defense Firm

1001 Fourth Avenue
44th Floor
Seattle, WA, 98154


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Super Lawyer in Washington state 2005Law and Politics magazine2005
Super Lawyer in Washington state 2004Law and Politics magazine2004
Super Lawyer in Washington state 2003Law and Politics magazine2003
AV Peer RatedMartindale-HubbellN/A
Work experience
TitleCompany nameDuration
N/ALaw Office of David S. Marshall1997 - Present
AttorneyPrince, Kelley, Marshall & Coombs, P.S.1985 - 1996
AttorneyWilliams, Kastner & Gibbs1984 - 1985
Deputy Prosecuting AttorneyPierce County Prosecuting Attorney's Office1981 - 1984
Association namePosition nameDuration
US Court of Appeals for the District of Columbia CircuitMember2006 - Present
United States Court of Appeals for the Ninth CircuitAdmittedN/A
United States District Court for the Western District of WashingtonAdmittedN/A
National Association of Criminal Defense LawyersMemberN/A
Washington Association of Criminal Defense LawyersMemberN/A
Washington State Bar AssociationMemberN/A
Washington State Bar AssociationMemberN/A
Washington Governor’s Sex Offender Task ForceDefense Bar representative2007 - 2007
Child Sex Abuse Investigation Work GroupDefense Bar representative1999 - 1999
Innocence Project NorthwestVolunteer attorney1998 - 1999
Legal cases
Case nameOutcome
Wenatchee "Child Sex Abuse Ring" prosecutionsConvictions in cases overturned.
Habeas corpus counsel for prisoners interned at Guantanamo Bay, CubaOngoing.
See all legal cases 
Publication nameTitleDate
Child Abuse Law Web siteChildren's Memory Errors Can Increase with Age, Study Finds2008
Child Abuse Law Web siteMothers' Dilemma Eased2008
Child Abuse Law Web siteAdults Can't Tell When Children Lie2008
Child Abuse Law Web siteSeed and Soil: Why Billy Accused Max2007
Lecture on Child Sex Abuse AllegationsChild Sex Abuse Allegations in a Family Law Context2007
Child Abuse Law Web siteA "Shaken Baby" Case Study: Judge Reverses CPS Decision That Woman Assaulted Infant2003
When a Child Speaks (1997 - 2000)Newsletter1997
Washington Criminal DefenseRight Without a Remedy1996
Washington Criminal DefenseNot Just for Kids1993
Bicycle ForumA Lawyer's View of Bicycle Law and Practice1987
AAJ TrialWhen Erythromycin is Ineffective1987
Seattle-King County Bar BulletinEyewitness Expertise Admitted1987
Seattle-King County Bar AssociationCrossing the Sentencing Moat1987
Seattle-King County Bar AssociationCorpus Delicti Rule Lives On1986
Seattle-King County Bar AssociationBriefing State Constitutional Issues1986
Seattle-King County Bar AssociationAttorney as Adverse Witness1986
School nameMajorDegreeGraduated
University of California at Berkeley, Boalt Hall School of LawLawJD - Juris Doctor1974
Cornell UniversityGovernmentBA1970
Speaking engagements
Conference nameTitleDate
Society Representing Accused PersonsInterviewing Young Children in Child Abuse Cases2008
Child Abuse Investigation and Interviewing TrainingDefense Perspective and Effective Testimony2007
Live Nationwide Audio PresentationInterviewing and Examining Child Witnesses2006
Allegations of Sexual AbuseFalse Allegations of Child Sex Abuse2006
Motions Madness ConferenceStrategies for the Post-Crawford World2005
Conference on Nuts and BoltsThe New SSOSA2005
Child Abuse Investigation and Interviewing TrainingDefense Perspective and Effective Testimony2005
Sex Crimes SeminarConfrontation after Crawford; Setting the Stage: Voir Dire2004
Child Abuse Investigation and Interviewing TrainingDefense Perspective and Effective Testimony2004
WSBA 10th Annual Washington Criminal Justice InstitutePractical Tips When Dealing with Child Witnesses, Including Update on Videotaping of Child Interviews2003
Washington State Defender AssociationThe Science of Cross Examination2002
WSBA Eighth Annual Washington Criminal Justice InstitutePreparing for and Interviewing Child Witnesses2001
Sex Offense DefenseChild Interviews: Critiquing Theirs, Conducting Yours2001
Civil Litigation InstituteThe Testimony of Child Witnesses in Investigations and Trials2001
Juvenile Law SeminarForensic Interviews of Children2000
International ConferenceCross-Examination of Law Enforcement: Making the Prosecution's Interviewer an Expert Witness for the Defense2000
Washington Criminal Justice InstituteStrategies for Dealing with Child Witnesses1999
Child Abuse Investigation and Interviewing ConferencesCross Examination Lecture and Demonstration1999
Sex and ViolenceWising Up After the Wenatchee Witch-Hunt: Cases and Strategies1998
Seattle Forensic InstituteChild Witness Statements in Sex Abuse Cases1998
CLE Seminar on Jury SelectionVoir Dire1995
Annual MeetingOn Your Feet: Oral Advocacy in Court1995
Annual MeetingUnleashing the Advocate Within: Using Theater Techniques to Command Jurors' Attention and Emotions1994
SeminarProsecutorial Misconduct1991
SeminarSuppressing Evidence1990
SeminarSmashing the Prosecution Case1987
International ConferenceAccident Investigation and Litigation; Tort Liability1986
Training Sessions of TroopersCivil Rights Liability of Police Officers1984
CLE SeminarJury Considerations in Prosecution1983