Identifying where the cops went wrong in making drug busts, narcotics officers frequently:
(from Shouse site http://www.shouselaw.com/drug-crimes.html)

• ignore the California rules of search and seizure
• "set-up" suspects in violation of California entrapment laws
• rely on bogus "confidential police informants"
• mislead judges in order to bamboozle California search warrants
• exaggerate or outright lie in their police reports, or
• arrest people without evidence that the drugs even belonged them

As we know, especially where allegations for sale are claimed, forfeiture is going to be an issue.
Here are other topics:

• Accessory After the Fact
• Adjudication Hearings
• Animal Abuse & Cruelty
• Appeal of Felony Convictions
• Appeals
• Arraignment Hearing
• Arrest Warrants
• Arson
• Assault & Battery
• Attempted Murder
• Auto Burglary
• Auto Insurance Fraud
• Background Checks
• Bad Checks
• Bail
• Battery on a Peace /Police Officer
• Brandishing a Weapon or Firearm
• Bribery Law
  • Commercial Bribery
• California Appellate Project
• California Drug Court
• California Realignment AB 109

• Coerced Confession
• Concealed Weapons
• Conspiracy
• Contempt of Court
• Contributing to the Delinquency of a Minor
• Controlled Substance Possession
• Convictions &Job Applications
• Crime of Annoying Phone Calls
• Crime of Torture
• Criminal Convictions
• Criminal Court Process
• Criminal Defense
• Criminal Negligence
• Criminal Threats
• Cyberstalking
• DMV False Statements
• DMV Hearing
• DUI
• DUI Breath Testing
• Date Rape
• Deprivation of Child Custody or Visitation
• Detention Center/Jail 

• Domestic Battery
  
• Domestic Violence
• Drive By Shooting
• Driver's License Suspension
• Driving Crimes
• Drug Crimes
• Drug Diversion
• Drug Possession
• Drug Possession for Sale
• Ecstacy Possession
• Elder Abuse
• Embezzlement
• Entrapment
• Evading an Officer
• Extortion/Blackmail
• Extradition Laws
• False & Coerced Confessions
• False Criminal Report
• False Identification to a Police Officer
• False Imprisonment Law
• False Personation
• False Report of Emergency
• Medical Marijuana Dispensaries
• Medical Marijuana Program
• Mentally Disordered Offenders
• Methamphetamines Possession
• Methamphetamines Sales
• Miranda Rights
• Mistaken Eyewitness Identification
• Mistaken Identification
• Moral Turpitude
• Mortgage & Real Estate Fraud
• Motion for a New Trial
• Motions to Vacate Criminal Judgment
• Murder
• Negligent Operator Suspension
• News & Information
• Open Carry Gun Laws
• Planting/Tampering With Evidence
• Police Dogs and Abuse
• Police Misconduct
• Possessing Destructive Devices or Explosives
• Possession of Burglary Tools
• Possession or Sale of Ecstasy
• Predatory Lending
• Preliminary Hearings
• Private Polygraph Test
• Probation
• Professionals & Criminal Convictions
• Prosecutorial Conduct
• Prostitution
• Providing Minors Alcohol
• Public Intoxication
• Racial Profiling
• Rap Sheets
• Real Estate Fraud & "Phantom Help" Schemes
• Rent Skimming
• Resisting Executive Officer
• Rights of Parents
• Rioting
• Theft Crimes
• Three Strikes Sentence Appeals
• Trespass
• Unemployment Insurance Fraud
• Unlawful Acts Involving Identification Cards
• Vandalism
• Vehicle Codes
• Veterans with PTSD
• Victim's Rights
• Violent Crimes
• Voluntary Manslaughter
• Welfare Fraud
• White Collar Crime
• Wiretapping