The Deductionist Podcast

Peter Sutcliffe was interviewed nine times and the accent on a hoax tape counted in his favour. The tape had been played to the nation, and walking away from it would have meant admitting the enquiry had chased the wrong voice. Former senior detective Bob Pointer and private investigator Ben Cardall take the sunk cost fallacy into the incident room and the interview room, on both sides of the tabl...

Hannah Fry went through every past season of The Traitors looking for statistical patterns, then got recruited as a traitor herself. Maths can predict human behaviour across a crowd with unnerving precision. Point it at one person and the predictions fall apart, for reasons chaos theory explains. In this episode: • Why crowds behave like equations, from Hannah Fry's London riots model to the near...

The evidence in a romance scam is all there in writing. Every message, every apology, every “be careful, there are scammers on here” sits in the chat log like a frozen crime scene. Dr Elisabeth Carter, criminologist and forensic linguist, reads those crime scenes line by line, by hand, and she joins Ben Cardall and Bob Pointer to show exactly how the crime is built. Most people picture a romance s...

Spotting lying, we are told is just Somebody freeze framed a grieving parent's face, announced "duping delight" to four million followers, and the comment section returned a verdict before the police did. The lie detection science says that person was running on a coin flip with a ring light. Ben Cardall and former senior detective Bob Pointer take the microexpressions truth apart, then rebuild wh...

Many a true word is spoken in jest and only some of them from Sherlock. Except on page eighteen of Cain's Jawbone, where it isn't. One word has been swapped, and I read straight past it three times. This is episode five of my live attempt to solve Cain's Jawbone, the 1934 literary murder puzzle by Torquemada. A hundred pages printed out of order, six murders, six killers, and a solution only a han...

Cain's Jawbone is a 1934 literary puzzle by Edward Powys Mathers, pen name Torquemada. 100 scrambled pages, six murders, no key, no instructions, and only four verified solutions in ninety years. In a bid to live up to the the Real Life Sherlock title I have been given. Professionally, on stage, on camera, that name is the whole premise, read people, catch what others miss, work it out before anyo...

Ai is here and David Clarke spent his career catching fraudsters, first as a City of London Police Fraud Squad chief, then building the National Fraud Intelligence Bureau from the ground up. Now he's watching artificial intelligence industrialise the exact crime he built his life around stopping. This conversation is about what happens when the con artist never sleeps, never runs out of voices, an...

Your best performer might be running on narcissism, Machiavellianism, or psychopathy, and the org chart rewards it. This is the Dark Triad without the textbook, applied to the office and the relationships you can't just walk away from. In this episode: - What the Dark Triad actually is, and what it isn't (it's not a diagnosis) - The difference between admiration seeking and rivalrous narcissism at...

You didn't choose that option. Something built the room you chose it in, and it built the room before you walked in. In this episode: – What choice architecture actually is and why nudge theory changed behavioural economics – The organ donation study that proves a default can move outcomes by 75 percentage points – Why AI personalisation turned nudge theory from a blunt tool into an individual wea...

I have been called a Real Life Sherlock by many folks I respect within Law Enforcement. Cain's Jawbone is the puzzle that gets to decide if that's actually earned. In 1942 a crossword got too easy, so the Daily Telegraph built one vicious enough to recruit five strangers into Bletchley Park without their knowledge. Cain's Jawbone runs the same test, except the Laurence Sterne Trust holds a verifie...

Everyone thinks close protection is the suit, the earpiece, the guy scanning a crowd like he's in a Statham film. It isn't. It's advance work nobody sees, a plan already three versions deep before the principal arrives, and hundreds of hours of nothing happening on purpose. Jim Wenzel joins The Deductionist Podcast with Behavioural Intelligence to break down what close protection actually is: proa...

Sherlock built his method on reading behaviour before anyone spoke a word. Turns out marriages run on the same evidence. Sue Palmer Cole, the divorce doctor and founder of the Divorce Academy, joins Ben and Bob to break down what actually predicts whether a relationship survives, and it isn't compatibility. It's adaptability, communication style and how a couple handles conflict when it shows up....

Before you can solve the world's hardest literary puzzle, you need to understand who built it and why. Edward Powys Mathers was a Persian poetry translator who spent thirteen years setting cryptic crosswords for the Observer under a pseudonym borrowed from history's most enthusiastic torturer. In 1934 he published Cain's Jawbone, a 100-page murder mystery with its pages deliberately scrambled, the...

"Only 3 left." "Offer ends tonight." Your brain doesn't ask if it's true, it just reacts. This episode breaks down exactly why manufactured scarcity works and how to spot it before it spots you. In this episode: - The real psychology behind scarcity and loss aversion (Kahneman, Cialdini) - Why "limited time" and "limited quantity" hit different parts of the brain - How investigators encounter manu...

Poker tells made Zachary Elwood's name, then made him a skeptic of his own industry. Zachary Elwood, host of the People Who Read People podcast and author of the Reading Poker Tells trilogy. Join us as dig into what years of high stakes poker actually proved about deception, why most popular body language advice collapses under scrutiny, and how a game with instant feedback taught him to distrust...

Cains Jawbone is a 1934 literary puzzle by Edward Powys Mathers, pen name Torquemada. 100 pages of dense prose, six murders, six murderers, printed deliberately out of order with no map, no key, and no instructions. The number of possible arrangements is 9.3 followed by 157 zeros. Only four people in history have solved it correctly. This is Episode 1. I'm a licensed private investigator, trained...

Trust is not something you give. It is something that gets taken, using documented mechanisms, before you have processed a single piece of evidence. Ben Cardall and Bob Pointer map the full architecture of manufactured likeability: the Halo Effect, affinity bias, the chameleon effect, the Liking Principle, and the mere exposure effect. Then they show you how to audit your own responses and spot en...

Lie detection has been the wrong goal all along. Mark Anderson spent decades in law enforcement, and his conclusion is blunt: the mindset you carry into an interview matters more than any signal you think you're reading off someone's face. In this episode: Why curiosity over certainty is an operational principle, not a motivational slogan, and what it actually changes in practice The lie detection...

Most people think critical thinking means finding the right answer faster. Kent Axell has spent a career proving it means knowing exactly which doors you're closing behind yourself, and why that distinction changes everything from a Las Vegas stage to a jury room. In this episode: Why magicians develop critical thinking skills that investigators and analysts rarely get trained in The assumption gr...

Pete Rushmore built a business, hit the metrics that were supposed to mean something, and felt nothing. Not because he failed. Because the vision he was chasing was answering a question he'd never actually asked. This episode follows the performance trifecta he developed out of that realisation: direction, skills, energy, and why energy is the foundation even though it's the last thing anyone look...

221A was the case so far. The evidence reviewed. The record examined. 221B is the next chapter. And if you have been listening, you already know the case is getting bigger. In this solo episode, Ben maps the forward trajectory of The Deductionist. Not predictions. Not promises. A reasoned projection based on what the work has shown, what the culture is demanding, and where Holmesian methodology ac...

Desmond Morris spent 98 years watching humans the way scientists watch animals. No assumptions. No sentiment. Just systematic field observation turned into a working method. If you have ever read a room, clocked a liar, or known something was wrong before you could explain why, some version of Morris is in that skill. You just never knew his name. In this episode, Ben and Bob Pointer break down th...

221 episodes. One question that started it all: is brainy really the new sexy? In this milestone retrospective, Ben revisits the full arc of The Deductionist podcast. What began as a question about intelligence versus the performance of intelligence has grown into one of the most scientifically grounded behaviour and deduction shows available anywhere. This episode is the case file review. The deb...

You think you're making free choices. You're not. In this episode, Ben and Bob break down the psychology of behavioural conditioning and show you exactly how it operates on your decisions, your habits, your spending, your compliance, and your relationships without you ever noticing. From Pavlov's dog to pandemic supermarkets. From love bombing to the compliance ladder. From cult control via Steve...

What if the quietest person in the room is also the most dangerous observer in it? In this episode, Ben and Bob are joined by leadership coach Marcel for a conversation that cuts straight to the behavioural mechanics of humility. Marcel can be found  https://www.linkedin.com/in/marcelvandehoef/ And here for more insight from him and here Not the watered-down, doormat version the word often co...