After two decades as a behavior analyst in the FBI, Robin Dreeke knows a thing or two about sizing people up. He's navigated complex situations that range from handling Russian spies to navigating the internal politics at the Bureau. Through that experience, he was forced to develop a knack for reading people - their intentions, their capabilities, their desires and their fears.

Dreeke's first book, It's Not All About "Me", has become a cult favorite with listeners seeking to build quick rapport with others. His last book, The Code of Trust, was about how to inspire trust in others as a leader. In Sizing People Up, Dreeke shares his simple, six-step system that helps you predict anyone's future behaviour based on their words, goals and patterns of action and the situation at hand.

Predicting the behaviour of others is an urgent need for anyone whose work involves relationships with others, whether it's leading an organisation, collaborating with a teammate, or closing a sale. But predictability is not as simple as good and evil or truth and fiction. Allies might make a promise with every intention of keeping it, not realising that they will be unable to do so due to some personal shortcoming. And those seeking to thwart your endeavor may not realise how reliable their malevolent tells have become.

Dreeke's system is simple but powerful. For instance, a colleague might have a strong moral code, but do they believe your relationship will be long-term? Even the most upstanding person can betray your trust if they don't see themselves tied to you or your desired result in the long term. How can you determine whether someone has both the skill and will to do what they've said they're going to do? Behaviours as subtle as how they take notes will reveal their reliability.

Using this book as their manual, listeners will be able to quickly and easily determine whom they can trust and whom they can't; who is likely to deliver on promises and who will disappoint; and when a person is vested in your success versus when they are actively plotting your demise. With this knowledge they can confidently embark on anything from a business venture to a romantic relationship to a covert operation without the stress of the unknown.