Client communication for private investigators

Most complaints about investigators aren’t about the investigation. They’re about silence: the client who paid a retainer and heard nothing for nine days, the attorney who learned about a problem at the deposition, the insurance adjuster who found out the hours ran over when the invoice arrived.

Pursuit Magazine’s piece on why attorneys don’t hire investigators makes the point directly: attorneys don’t want “a PI who will fail to answer calls, or who will simply disappear altogether,” and it urges investigators to “over communicate.” This guide turns that advice into habits you can keep while working cases in the field.

Set expectations at the start

Communication problems start at intake, when nobody says what “keeping you updated” means. Agree these before you start work, and put them in writing (see our retainer agreement checklist and onboarding guide):

• Who your contact is. For an attorney client, is it the attorney, a paralegal, or both? For an insurer, the adjuster or the SIU contact? Only update the people agreed.
• How you’ll communicate. One channel for case content (a portal or an encrypted app), phone for anything urgent, and text or email only for “there’s an update waiting.” Our guide to choosing secure messaging compares options.
• How often. A fixed rhythm, not “when there’s news.”
• What counts as urgent, in both directions.
• When you’re reachable. Field work means you won’t always answer. Say when you’ll reply.

Choose a rhythm and keep it

A predictable update beats a brilliant, irregular one. Some patterns that work:

• Surveillance: a short note at the end of each day in the field: hours worked, whether the subject was seen, anything notable. No conclusions yet.
• Background and locate work: an update at each milestone (records requested, records received, interviews set) or weekly, whichever comes first.
• Litigation support: weekly, plus immediately for anything that could change the attorney’s strategy.
• Long-running matters: a monthly summary even when nothing has happened. “No change, here’s what’s next” is still an update.

Put the rhythm in your calendar. On the days you’re tempted to skip it because there’s nothing to say, that’s exactly the update that keeps the client from calling.

What a good update contains

Keep it short and consistent:

1. What you did since the last update (dates, hours).
2. What you found, stated as facts, not interpretations.
3. What’s next and when.
4. Anything you need from them: a decision, a document, authorization for more hours.
5. Budget position: hours or spend used against what was authorized.

That last line prevents more disputes than any contract clause. A client who sees “14 of 20 authorized hours used” on Tuesday isn’t surprised by an invoice on Friday. Our time tracking and billing guide covers tracking against a budget.

Write for the reader. Use plain words, short sentences and the client’s names for things. Federal plain-language guidance boils down to writing for your audience, and your audience here is a worried person or a busy lawyer, not another investigator.

Separate facts from interpretation

In updates, as in reports, say what you observed and let the client draw conclusions, or offer your assessment clearly labeled as such. “Subject’s vehicle was parked at the address from 21:40 to 06:15” is a fact. “He’s clearly living there” is a conclusion the client may repeat to someone who will ask how you know. Our guide to writing reports clients understand goes further.

Delivering bad news

Sooner or later you’ll have to tell a client something they don’t want to hear: the subject didn’t leave the house for three days, the witness won’t talk, the records don’t exist, or the answer to their question is the one they feared.

• Tell them promptly. Bad news doesn’t improve with age, and a client who finds out late feels deceived as well as disappointed.
• Lead with the fact, then the context. Don’t bury it in paragraph three.
• Explain what it means and what it doesn’t. “We didn’t observe activity” is not “there was no activity.”
• Offer options: continue, change approach, pause, or stop. Let them decide, with a cost for each.
• Use the phone for anything significant, then confirm in writing. Written-only bad news reads colder than you meant it.

Emotional clients

Domestic cases, custody matters and missing-person cases bring clients who are frightened, angry or grieving. They’ll message late at night and want answers you don’t have yet.

• Be kind and be clear about limits. “I understand this is hard. I’ll update you at 6 p.m. tomorrow as agreed” is both.
• Don’t let pressure change the plan. The Pursuit Magazine case-management framework puts assessment and planning before any fieldwork for a reason. A client pushing you to “just follow him tonight” is asking you to skip both.
• Never share more than the engagement covers, such as a subject’s new address, where doing so could put someone at risk. Screen for this at intake (see our case intake guide).
• Know when to refer on. Some clients need a counselor or an attorney more than an investigator. Saying so is part of the job.

Scope creep

“While you’re at it, could you also look into…” is how a fixed-scope case turns into an unpaid one. When a client asks for something outside the agreed scope, answer warmly and in writing: “Happy to. That’s outside what we agreed, so here’s what it would involve and cost. Let me know if you’d like to add it.” Record their answer in the case file before you start.

Keep the conversation on the record

Every material instruction, decision and authorization should end up in the case file: “Client authorized 10 more hours, call 9/14 14:05, confirmed by message.” If it only exists in your memory or on your personal phone, it can’t help you when there’s a dispute about scope, fees or what the client knew and when.

Practical habits:

• After any important phone call, send a two-line written summary through your normal channel.
• Save material messages from other channels into the case file with the date.
• Keep your personal phone out of it where you can.

Closing the loop

When the case ends, say so clearly. A closing message should confirm the final deliverable, what happens to any remaining retainer, how long you’ll keep the file and how the client can get copies, and how long their portal access (if any) lasts. Then ask for feedback. Clients rarely complain unprompted; they simply don’t come back. A short “anything I could have done better?” tells you what the silence won’t.

Spotted an error? Tell us by email and we'll correct it.