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San Francisco Bay Area Detectives In The Napa Valley Wine Country

Sam Spade™ is the  product name of Spade & Archer investigation services. We serve clients all over the San Francisco Bay Area and Nationwide.

OFFICIAL SAM SPADE by Spade & ARcher.png

We Solve Big & Urgent Challenges

Arrange a complimentary 10-minute consultation

Golden Gate Bridge


We look into people. We validate things like criminal history, education, employment, conduct, and more.


Our background investigations can be custom tailored to your exact specifications.

San Francisco Detective Agency


We locate hidden assets to make honest distribution more fair. Don't let them hide assets and cheat you from what you are due.


From banks, to brokerage accounts; from hidden companies to houses and other real estate, crypto currency, safe deposit boxes, insurance policies and more.

San Francisco from boat Spade & Archer


Looking for someone? Googled yourself silly? We use proprietary and government sources not available to the public to locate people.

Napa Grapes Spade & Archer Detectives


We help with family law matters such as cheating partners, child custody & support and elder abuse. During a family matter, emotions are understandably at an all time high. We offer objective sound investigative approaches that gather relevant facts that help you establish your case.

Napa Uptown Spade & Archer Detective Agency


In-house professional digital forensics including social media forensics, Online harassment, cyber bullying and more. We have specialized people that are cybersecurity and cyber investigators.

Napa Valley Spade & Archer

ValiDate™ Romance & Dating

Find out the truth about who you are dating. Is it real or a scam? We get the answers you need for very little cost.

Private Investigation Services

We know that the challenges our private investigation clients face are no laughing matter. We are human too and may have gone through some of the very matters you are. We understand well the complexity of the matters our clients face in the San Francisco Bay Area.

Value-Based Fees

We give our clients value for money! No unethical hourly rates. We charge flat fees to our clients to ensure transparency and integrity.

Same Day Start 

We start today! Just sign our agreement, fund the retainer and we will begin processing your case the same day.

32 Years Experience

Limited Clients

2x Faster

Only experience proves reliability and expertise. Our experience spans more than three decades.

We only take a few clients on at a time. Other firms cram as many as they can into their case load and your case becomes just another matter.

We've cut out the red tape. We streamlined many of our services to be completed nearly twice as fast as other private investigators.

Transparency and honesty start with upfront pricing. Find another private investigator who lists prices. Go ahead, we'll wait. That's because 90% of private investigators don't list prices. Makes you wonder why, doesn't it?

Our Clients Share

Understandably, most of our clients don't leave reviews. But, when we receive one, we are thrilled. Leaving a review may not be a good idea for your case, and we understand that. We are grateful for the dozens we do have.

Charlize tesimonial

I obtained some serious results when the agency found assets that were rightly mine during the divorce. Made things much smoother.

Charlize - Vallejo, CA

Tara's review

They proved that my ex was working and that he had not told the courts about some of his bank accounts. I got the child support I deserved because of their work.

Tara - Napa, CA

Robert's testimonial

Business partner stole $180,000 plus. These guys were the best as they literally recorded him stealing from our company registers. Very cleverly done and highly recommended.

RJ - San Francisco

Lydia review

This is a testimonial for Steve the private detective I hired. I was more than happy with the performance of this group.

Lydia - Sonoma


We do investigations a little differently.

SAM SPADE™ All-inclusive pricing is our best option to save you money. Whenever possible we will create a package price so you know what you are getting for your money. Hourly rates can be bottomless pits.

We treat your hard-earned money as our own. We know it isn't pleasant to hire a private investigator. We wouldn't want to either. So we do our best to take the sting out of high-quality service and results.

Spade and Archer San Francisco

Sam Spade Investigations Help Improve Your Life


we search for answers

Discreet San Francisco Bay Area Investigations Have Been Our Focus For 30 Years

We know  you need CLARITY in life, but don’t know where to start? Click the button to schedule a call with an expert who can guide you in getting STARTED now.

  • Licensed expert advice

  • Secure, online process

  • Deep understanding of the unique challenges private clients face

Spade & Archer Female Detective

How Much Does a  Private Investigator Cost?

The cost of hiring a California private investigator will depend upon the complexity of the investigation, the required human resources, possible expense, and the detective's experience. 


We break many of our private investigation services into package prices, saving our clients from the frustration of overinflated billing. We have all-inclusive package prices starting at $416. We have no unethical hourly billing.

Best In Class Case Management

Everything you need to get your investigation started fast.


Complete Privacy

Maximum discretion. Spade & Archer and our Sam Spade™ investigative product is the preeminent privacy focused private investigation firm in California.


Secure Case Management

Every case is managed by only one person with complete security at the forefront. We do not keep paper files in our office and we utilize encrypted Tresorit for safe digital storage of only our contract between us.


Quick Case Initiation 

Private doesn't waste any time. We roll up our sleeves and get started immediately on your matter. Don't wait to start your case, all cases are started the same day you hire us.

Will the person know I hire a private investigator?

No. No one will ever know. Any records we access, data bases we search or information we uncover will not leak to the subject of investigation. We use careful and methodical approaches to our investigative strategies. If we feel any aspect of the matter may leak, we will share it with you first so we can decide if the risk is worth the reward.

Do you offer any guarantees on your investigation services?

Yes. We guarantee our workmanship based on the budget the client has provided. We also have some additional guarantees depending on the case.  Not all private investigations come with a guarantee, so it’s best to speak to us to discuss your matter. Remember, each investigation is different, and there are no promises as to the outcome of your private investigation.

How much does a private investigator cost?

Most of our private investigation fees are in package prices so that you don’t worry about hourly billing. For example, we have package prices starting at $208, $950 and others more complex that may have an hourly rate of $200 per hour.

  • How much does a background check cost?
    We custom tailor each background check to the needs of the matter at hand. You can count on a background check starting at $416 for a good point of reference.
  • What does a background investigation cost?
    Background investigations are more in-depth and can focus on a certain area, be broad in nature or go very deep. Background investigations start at $1250.00
  • What's the differnece in a background check/investigation and criminal history?
    Criminal history investigations can be part of a background check/investigation. They can also be a stand alone service you choose to hire us for. Criminal history checks start at $400 where a basic background check starts at $600.
  • How long does a background check/investigation take?
    Depending upon the information you desire, a background check can be completed the same day. Some take longer, this is solely dependent upon how deep you wish to go. Some background investigations can take a month, but this is generally the case when we are interviewing people during the background investigation.
  • Is the background check/investigation discreet?
    100% yes. There is nothing that leaves a trail on discreet background inquiries. However, some types of background investigations need the subject's permission to go into various areas of their life or if making financial inquiries. We will advise you ahead of time if that is the case so you can decide if this is what you want.

Spade & Archer is a  San Francisco Bay Area private investigator and cybersecurity firm located in Napa, California, and Sheridan, Wyoming. We provide nationwide private investigation services. We handle most cases in a package price to save you from over inflated billing.

We use technology significantly to serve our clients nationwide. We are not standard private investigators—our goal is different. We want the private investigation, cyber investigation, and security services we provide to help our clients live happier, healthier, and wealthier lives. We help people live better lives by answering challenging questions and providing information that provides peace of mind. Spade & Archer delivers actionable information used in business, personal, and legal matters.

Our firm is entirely available for private investigations, commercial investigations, cybersecurity, phone forensics, privacy consulting, and security planning services.

Our San Francisco Bay Area local private investigator handles cases in San Francisco, San Jose, Marin, San Rafael, Sonoma, Petaluma, and Napa. In addition, our private investigation services are available in Vallejo, Benicia, Martinez, Walnut Creek, Fairfield, and Vacaville.


We'll Help You Cross That Bridge When You've Come To It

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