The six U.S. Editions
Each book stands on its own; together they cover the trade from method to decision.
Six U.S. Editions on risk analysis, corporate investigations, interviewing and CPP/PSP exam preparation. Method first, judgment always. Paperback and Kindle on Amazon.com.
See the six books The prep app Free newsletterA. Hertzog writes for the security manager, the investigator and the professional who has to get the work right on Monday morning, not admire theory. Step by step, built on real cases (his own mistakes and other people's) and on one discipline: document well, then decide.
Hertzog served in the U.S. Marine Corps, worked in law enforcement and holds a Bachelor's in Criminal Justice. He writes the way he works: method, evidence, judgment.
Each book stands on its own; together they cover the trade from method to decision.
The 1,000-question bank from the CPP and PSP book, in your pocket.
1,000 practice questions, each with an explanation and the common trap; timed mock exams at real exam pace; automatic error review. Interface in English and Spanish. 10 free questions every day; unlock everything with a single one-time purchase, no subscription. 100% offline.
App Store Google PlayOne exam question and one passage from the field, by A. Hertzog.
Each issue: one CPP/PSP practice question, explained, and one passage from the SECURITY EXPERT series, word for word. Free, by email.
Subscribe freeThe original Spanish series, also on Amazon.
Método cuantitativo, contramedidas y mitigación. El más vendido de la serie.
El porqué: ética, sesgos y evidencia. Empieza aquí.
El cómo: protocolos, escena y entrevistas en 16 capítulos.
El banco completo con respuestas comentadas, en papel y Kindle.
