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Attacking Credibility & Motive

Attacking Credibility & Motive in a Phoenix Sex Crime Case

Michael Tamou, Arizona criminal defense attorney

Michael Tamou

Founding Attorney · Sex Crime Defense

5.0 · Sex Crime Defense

Most Phoenix sex crime cases come down to one person’s word, with little or no physical evidence. That makes credibility the whole battle, and exposing the motive to lie, the inconsistencies, and the outside influences on the accuser is how these cases are won.

Recognized By

NTL Top 100 Trial LawyersNTL Top 40 Under 40 Trial LawyersElite Lawyer 2026 Criminal Defense2025 Super Lawyers SouthwestNational College For DUI DefenseDUI Defense Lawyers Association
Michael Tamou, Arizona criminal defense attorney

Michael Tamou

Founding Attorney · Sex Crime Defense

★★★★★ 5.0 · Sex Crime Defense

Written and legally reviewed by Michael Tamou, Founding Attorney of Tamou Law Group, PLLC. Last updated June 29, 2026.

As Seen On

As Seen On NBC News, USA Today, Digital Journal, AZ Central, Lamar, ABC News, Fox News

Recognized By

NTL Top 100 Trial LawyersNTL Top 40 Under 40 Trial LawyersElite Lawyer 2026 Criminal DefenseNational College For DUI DefenseDUI Defense Lawyers Association2025 Super Lawyers Southwest

How do you fight a sex crime accusation that’s just one person’s word?

Quick answer: When a case rests on a single accusation, credibility is everything. We expose the accuser’s motive to fabricate (divorce, custody, revenge, jealousy, or secondary gain), document every inconsistency across each retelling, and surface prior false claims and the people who influenced the account. A jury left with real doubt about the accuser must acquit.

Tamou Law Group team, former prosecutors defending Arizona sex crime cases
Our Team Has Seen

Both Sides

Former Prosecutors · Law Enforcement · Public Defenders

When you call Tamou Law Group, you reach a firm that handles criminal defense exclusively, with serious experience defending sex crime cases across Arizona. Our team includes former prosecutors and law enforcement officers, so we know exactly how the State builds these cases, and where they fall apart.

At many large firms, the name on the building is a marketing figurehead, you rarely get them on the phone and your case goes to a junior associate. When you hire Tamou Law Group, your case is handled by a full team of attorneys, not associates, including Michael Tamou.

Why It Matters

When the Case Is One Word Against Another

In the majority of Phoenix sex-crime prosecutions there is no DNA, no injury, and no eyewitness, just an allegation. Here is why that changes everything.

People assume serious charges come with serious proof. In sex-crime cases, that assumption is usually wrong. A very large share of these prosecutions rest on a single accusation with no physical corroboration at all, no DNA, no documented injury, no independent witness. The State’s entire case is one person’s account, and whether the jury believes that account.

That makes credibility the battlefield. The prosecutor knows it, which is why they will frame the question for the jury as: “What reason would this person have to lie?” If that question goes unanswered, the accusation can carry the day on its own. Our job is to answer it, with evidence, and to show the jury that this account cannot bear the weight the law requires.

In Arizona, the State must prove every element beyond a reasonable doubt. When the only evidence is testimony, doubt about the witness is doubt about the case. A jury that does not trust the accuser cannot convict.

This is not about attacking victims. Real victims deserve justice. But false and exaggerated accusations are also real, and an innocent person facing prison and lifetime registration is entitled to a defense that tests the one piece of evidence against them. That testing is what cross-examination and the right to confront witnesses exist for.

The Motives

Why a Sex Crime Accusation Might Be False or Exaggerated

Jurors want a reason. These are the motives we investigate and, where the evidence supports it, put in front of the jury.

Divorce and Child-Custody Disputes

This is the most common context we see. When a marriage is ending or a custody fight is starting, an accusation, against a spouse, a boyfriend, a relative, can become a weapon. It can win custody, cut off parenting time, or shift leverage in a settlement. The timing often tells the story: the allegation surfaces days after a custody filing, not when the alleged conduct supposedly happened.

Revenge, Jealousy, and a Bad Breakup

A relationship that ends badly, an affair discovered, a new partner, can produce a retaliatory claim. Anger is a powerful motive, and text messages, social media posts, and the sequence of events frequently reveal it.

A Cover Story

Sometimes a consensual encounter is reframed as an assault after the fact, when it is discovered by a partner or parent, when there is regret, or when reputation is at stake. The defense is consent, and the evidence is the relationship that existed before and after.

Secondary Gain

Accusations can be driven by tangible benefits: a civil lawsuit, immigration relief available to crime victims, attention, or sympathy. We look hard at what the accuser stands to gain.

Coaching and Influence, Especially With Children

A child rarely invents a detailed allegation alone. A parent or adult with a motive, often in a custody dispute, can shape, suggest, or reinforce an account until the child sincerely believes it. This overlaps heavily with how a forensic interview can go wrong.

The Cracks

Inconsistencies: The Details That Break a Case Open

Accounts that are true tend to stay stable. Accounts that are not tend to shift, and we map every shift.

Every accusation is told many times: to the first person the accuser confided in, to the 911 dispatcher or first officer, in the forensic interview, to detectives, and finally at trial. We obtain every version and lay them side by side. What we look for:

  • Changing core details, what happened, where, and when, that shift from one telling to the next.
  • Escalation over time, an account that grows more serious with each retelling, often after talking to others.
  • Timeline impossibilities, claims that conflict with phone records, work schedules, travel, or third-party witnesses.
  • Physical impossibilities, accounts that do not fit the layout of the home, the vehicle, or who else was present.
  • Contradicted by their own messages, friendly or affectionate texts to the accused after the alleged event.

A single inconsistency may mean little. A pattern of them, mapped clearly for a jury, can dismantle the State’s only evidence. This is painstaking work, and it is where experienced sex-crime defense earns its result.

The Investigation

How We Build the Credibility Attack

We do not wait for the State. We investigate the accusation independently and early.

From the moment we are retained, we go on offense. Building a credibility defense means gathering the evidence the police never looked for, because they were building a case, not testing it. Our work includes:

  • Pulling every prior statement and report, including the recorded forensic interview and police body-cam, and comparing them.
  • Mining communications, texts, DMs, emails, and call logs that show the real relationship, the timeline, and any motive.
  • Social media and digital footprint, posts and messages that contradict the account or reveal a reason to fabricate.
  • Locating witnesses, the people who heard a different version, who were present, or who know the backstory.
  • Retaining experts, including, in child cases, a specialist in suggestibility and interview contamination.
  • Investigating prior false claims, which, in appropriate cases, Arizona allows us to present.

We also build the affirmative story, who our client is, what the relationship actually was, and why the accusation does not hold together, so the jury hears more than just a denial.

The Law

What Arizona Lets Us Show the Jury

There are rules about what comes in. Knowing them, and litigating them aggressively, is part of the craft.

Arizona’s rape-shield law limits evidence about an accuser’s sexual history, but it does not bar evidence of a motive to fabricate or, in appropriate cases, evidence of prior false allegations. Those are often the most important tools in the defense, and getting them admitted requires careful pretrial motions and a clear legal showing.

We litigate these issues before trial so the jury hears the full picture, why this accusation arose, and why it cannot be trusted. Done right, the credibility attack reframes the entire case from “did he do it” to “can you believe this account at all.”

What To Do Now

If You Have Been Falsely Accused, Protect Yourself Today

What you do in the first days can decide the case. Do these things now.

  • Do not contact the accuser or anyone connected to them, it can become a new charge and looks like consciousness of guilt.
  • Do not try to explain to police. “Clearing it up” with a detective is how innocent people talk themselves into charges.
  • Preserve everything. Save texts, emails, photos, social posts, and anything showing the relationship, timeline, or motive, before it disappears.
  • Write a private timeline for your lawyer while the details are fresh, dates, places, witnesses, and what was really going on.
  • Call a sex-crime defense lawyer immediately, ideally before charges are even filed, so we can shape the investigation.
The earlier we are involved, the more we can do, sometimes enough to keep charges from ever being filed. Call 623-321-4699, 24/7 and confidential.

The Other Defenses We Build Alongside This One

A winning sex-crime defense almost never relies on a single tactic. We layer these strategies together as part of our full Phoenix sex crimes defense. Explore each one:

Facing a sex crime accusation in Phoenix? Talk to our team for a free, confidential review, 24/7.

Our Defense Team

The Experts We Bring to Sex Crime Cases

Sex crime cases are built on interviews, forensics, and digital evidence. We bring the specialists who take them apart.

Forensic Interview Experts

Child Suggestibility

Analyze recorded child interviews for leading, suggestive, or repeated questioning that can taint the entire account.

DNA & Serology Analysts

Independent Testing

Re-examine the lab’s raw data, mixtures, and statistics, and show what the DNA does and does not actually prove.

Forensic Nurse / SANE Reviewers

Medical Findings

Show that “no injuries” is normal and that findings labeled “consistent with abuse” often mean nothing.

Digital Forensics Examiners

Devices & Files

Review extractions, metadata, and access logs to attack who actually possessed the files, and how they were found.

Private Investigators

Motive & Witnesses

Uncover the motive to fabricate, the inconsistencies, and the witnesses the police never bothered to interview.

Psychologists & Memory Experts

False Memory

Explain to a jury how suggestion, coaching, and repeated questioning can create a false but sincere account.

Awards & Recognition

Our recognition for Phoenix sex crime defense is independently verified, click any award to confirm it:

When you are looking for the best Phoenix sex crime lawyers, these are the independently verified credentials that matter, earned by Founding Attorney Michael Tamou and a full team of attorneys, including former prosecutors.

Common Questions

Phoenix Sex Crime Defense FAQs

Quick answers to the questions we hear most.

Can you win a sex crime case with no physical evidence?

Yes. Many cases have no DNA, injuries, or witnesses, only an accusation. That is exactly where attacking credibility and motive works, because the State must prove the charge beyond a reasonable doubt on that one account alone, and a jury that doubts the accuser must acquit.

Can we tell the jury the accuser had a motive to lie?

Yes. Evidence of a motive to fabricate, a custody dispute, a breakup, revenge, or secondary gain, is central and admissible. Arizona’s rape-shield law limits sexual-history evidence but does not bar motive evidence, and it is often the heart of the defense.

Can prior false accusations be used in the defense?

In appropriate cases, yes. Arizona allows evidence of prior demonstrably false allegations under certain conditions. It requires a pretrial motion and a clear legal showing, which is why experienced counsel matters.

What if the accuser is a child?

Children can be honestly mistaken or influenced by adults and by suggestive questioning. We examine who had a motive, who was present, and how the account developed, and we often pair this with a challenge to the forensic interview.

Does a delayed report mean the accusation is false?

Not by itself. But the timing, the circumstances, and what changed when the report was finally made, for example, a custody filing, are all fair grounds to test credibility in front of the jury.

What if there are friendly texts after the alleged assault?

Those can be powerful. Affectionate or normal communications after the supposed event are inconsistent with the accusation and are a core part of the credibility attack.

Isn’t attacking the accuser risky in front of a jury?

It must be done with skill and care, never as an attack on victims generally, but as a precise, evidence-based examination of this account. Done right, it is the most effective defense in a single-accusation case.

Will Michael Tamou handle my case?

Your defense is handled by a full team of experienced attorneys, not associates, including Michael Tamou. Everything you share is confidential. Call 623-321-4699, 24/7.

Key Takeaways

  • Most Phoenix sex crime cases turn on a single accusation with little or no physical evidence.
  • Exposing the motive to lie, divorce, custody, revenge, secondary gain, is often the core defense.
  • Accounts that are untrue tend to shift; we compare every prior statement to surface the inconsistencies.
  • Arizona allows motive evidence and, in appropriate cases, prior false allegations.
  • A jury left in doubt about the accuser must acquit. Call 623-321-4699, 24/7.
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Case Results Disclaimer: The results described on this page are based on specific facts and circumstances and do not guarantee or predict a similar outcome in any future case. Every case is different. Past results do not guarantee future results. No attorney-client relationship is formed by viewing this page or submitting a contact form until a written fee agreement has been signed. Tamou Law Group, PLLC is licensed to practice law in the State of Arizona. This website is for informational purposes only and does not constitute legal advice.