Both of Mark Bentley's investigator books together for £45, plus postage. That's a saving of £20 on buying them separately (£65).

The Essential Cyber Investigator's Handbook: the practical field guide to OSINT, SOCMINT and online investigation techniques. Paperback.

The Quiet Investigator: the essential guide to good operational security, tradecraft and best practice in online investigations, including Mark's ABC pivot (Acquire, Back up, Corroborate). Paperback, 6 × 9 in. ISBN 978-1-0684638-2-2.

The Quiet Investigator is published on 1 December 2026. Order the bundle now and both books will be dispatched together from 1 December 2026. Postage is calculated at checkout.