Cross-examining a police officer is one of the most critical moments in a criminal trial. Jurors often begin a case with the assumption that law enforcement officers are reliable, experienced, and credible. Because of that built-in credibility, defense attorneys must approach cross-examination strategically.
While many lawyers focus on exposing inconsistencies or pointing out weaknesses in an investigation, one of the most important aspects of cross-examining a police officer is much simpler: controlling the witness.
If the attorney does not control the witness, the cross-examination quickly turns into another opportunity for the officer to repeat and strengthen the prosecution’s case.
Why Police Officers Are Difficult Witnesses
Police officers are not ordinary witnesses. Most officers testify regularly in court and are trained to explain their observations clearly and confidently. Many have also received instruction on how to handle cross-examination. As a result, officers often feel comfortable on the witness stand. If given the opportunity, they may attempt to expand their answers, explain their reasoning, or repeat damaging testimony that was already presented on direct examination. Even worse, they may try to avoid the question all together. For this reason, allowing an officer to freely narrate during cross-examination can be a costly mistake.
Cross-Examination Is Not a Conversation
One of the most common errors young attorneys make is treating cross-examination like a discussion with the witness. It is not. Cross-examination is a controlled sequence of statements disguised as questions. The lawyer, not the witness, should be telling the story. Every question should be carefully crafted to establish a specific fact that supports the defense theory of the case. In fact, the best “questions” are the ones that do not even contain an actual question, but gives the witness the belief they must respond and agree. For example:
“And when you arrived, the incident had already occurred.”
Keep Questions Short and Focused
Another key to maintaining control is simplicity. Long or complicated questions give the witness room to maneuver. Instead, effective cross-examiners ask questions that establish one fact at a time. For example, you do not ask: “when you arrived, the there were multiple people present in a dark room, correct?” Instead, you ask the following three “questions”:
- The area was dark.
- You were approximately 40 feet away.
- There were several people present.
These small facts accumulate into a powerful argument without giving the witness the opportunity to explain them away.
Prevent the Witness from Repeating Their Story
Police officers sometimes try to use cross-examination as another opportunity to repeat their version of events. This usually happens when the attorney asks broad or open-ended questions. A controlled cross-examination prevents this. If a witness begins to give a long narrative, the attorney should sternly  redirect the testimony:
“Officer, my question was simply whether the body camera was activated.”
By narrowing the scope of the question, the attorney reasserts control.
The Lawyer Must Be Prepared
Controlling a witness is only possible when the lawyer is thoroughly prepared. Preparation includes reviewing:
- Police reports
- Body-camera footage
- Dash-camera recordings
- Dispatch logs
- Prior testimony
When an attorney knows the evidence thoroughly, they can ask precise questions that leave the witness with little room to deviate. Preparation turns cross-examination into a deliberate and controlled process rather than a risky exchange.
