The defense that will be strongest for your criminal charge relies on the type and severity of the crime that you are being charged with and the unique factors of your situation. If you are facing a drug possession charge, a defense attorney may attempt to prove that you unknowingly had it on your person. If you are charged with assault, an attorney may argue that it was in self-defense. For many types of criminal charges, police entrapment or misconduct can result in the charges or evidence being inadmissible. If the prosecution cannot prove you guilty beyond a reasonable doubt, you can’t be convicted.