On the night of March 16, 2004, a man walked into the Ritz Casino in London with no bag, no drink, and no interest in conversation. He went straight to the roulette table. Within minutes, he was placing maximum bets, always on the same section of numbers, always dropping his chips exactly six seconds after the wheel began to spin. The ball landed where he predicted.
He won. No celebration, just a quiet nod. He came back the next night and did it again. By night three, the Ritz was down over £1 million.
There were no marked chips, no tampered wheels, no interference with the game. Just a phone, a stopwatch, and a flawless understanding of physics. The operation had begun months earlier, in the summer of 2003, in a quiet café in Zagreb, Croatia. There, Niko Tossa met with Naad Marjanovic and Livia Py.
Tossa explained that he had spent years watching roulette wheels across Europe and had noticed small physical irregularities in how they behaved. Wheels wear down. Balls slow at certain points. If measured carefully, he said, the drop zone could be predicted before anyone else placed a bet.
He wanted to test his method somewhere big. He wanted London. He wanted the Ritz Club. The three agreed on a plan: one to place the bets, one to keep watch, one to handle timing and calculations.
No crew, no outside help. They paid for their coffee and left separately. On March 14, 2004, they arrived in London. Marjanovic checked into a small hotel on Piccadilly, paying cash and asking for a room facing the street so he could see the Ritz from his window.
Py took a separate room under a different name and spent the afternoon mapping the area. Tossa arrived with only a gym bag and chose a room near the fire stairs. That night, they met in Marjanovic’s room to review the plan. The next evening, they entered the Ritz Club separately.
The club sits beneath the hotel behind an unmarked door. Inside, marble floors and deep red chairs set the tone. Minimum bets were higher than most people’s rent. They observed the staff, the security posts, and the wheels.
They tested their equipment. A Nokia phone, a silver Palm Pilot, a stopwatch. Nothing more. On the night of March 15, Marjanovic sat at a roulette table on the far side of the room.
Py took a seat with a clear view. Tossa stood near a column, measuring the wheel’s rhythm. After the spin, he counted six seconds and gave a subtle signal. Marjanovic placed a cluster of chips on a group of neighboring numbers.
The dealer called no more bets. The ball landed where they expected. They repeated the sequence through the night. By midnight, they had turned their original stake into £100,000.
They cashed out in smaller stacks and left separately. No one noticed. But John Woodton noticed. He had just started as head of security at the Ritz Club, coming from a background in British military intelligence.
On his first night, the casino lost over £100,000 at a single table. There was no sign of cheating. The winners were calm, polite, almost invisible. The next morning, Woodton reviewed the footage.
He watched the night twice, then frame by frame. He noticed the timing. Each time the ball spun, there was a wait. Then, exactly six seconds in, the same player bet big on the same section of numbers.
Too precise. He called his friend Mike Barnett, a consultant with experience in European casino fraud cases. Together, they considered hidden electronics, magnets, signaling devices, even dealer collusion. Nothing fit.
Woodton decided to watch the second night himself. He told staff to keep the table open no matter how much was lost. He wanted to see how far the trio would push. On March 16, Marjanovic returned.
The table was busier, the air heavier. Minimum bets were higher. He started with small bets, then increased. As the ball spun, he waited for the same moment.
Six seconds in, he placed a tight cluster of high-value chips on neighboring numbers. He won big. The routine continued. The pit boss called Woodton, who was across town.
Something is happening, he was told. We are losing money fast. Woodton told them to hold off. He wanted to watch.
By midnight, Marjanovic had turned £90,000 into £1. 2 million. He cashed out. £300,000 was paid in £50 notes, counted twice.
The remaining £900,000 was written as a single check. Py collected the cash. Tossa checked the paperwork. They left separately.
Woodton did not sleep well that night. He reviewed both nights of footage repeatedly, marking every move and every timing pattern. Barnett joined him. They saw no signals, no suspicious hand movements, no communication between the three.
But the betting was too clean. The timing never changed. He warned his staff not to confront the trio. He wanted evidence.
He asked for close-ups of their hands, their clothing, even their shoes. Nothing turned up. By the end of the day, he was convinced something was happening, but he still could not prove how. He told his team to prepare for the third night.
If the trio showed up again, the police would be waiting. On March 17, just before 10 p. m. , the Ritz Club was louder than usual.
More staff were on the floor. A second pit boss lingered near the table. Marjanovic noticed the tension. The regular dealer barely made eye contact.
Py arrived minutes later, sharper and more careful. Tossa circled the room once. He saw two men in dark suits at the far end. Faces he had never seen before.
John Woodton signaled quietly. Two officers stepped forward. Marjanovic was asked to leave the table. Py stood, her face unreadable.
Tossa was stopped near the bar. There was no struggle, no raised voices. A silent, decisive sweep. They were brought into a side room behind the floor.
White walls, fluorescent lights. Their pockets were emptied. Phones, a Palm Pilot, stacks of notes, lists of casinos. The £900,000 check from the night before was produced as evidence.
No accusations were made yet, just procedure. Scotland Yard officers asked them to return to their hotel for a search. Rooms were searched methodically. Bags, electronics, even the lining of jackets.
Every scrap of paper and every device was collected. At Scotland Yard, forensic teams began analyzing the electronics. The trio sat through hours of questioning, saying little. No one admitted to anything.
The investigation moved quickly. Technicians searched for betting patterns, secret apps, anything that could prove cheating. They found nothing. No interference.
No tampering. Instead, they found calculations. Ball speed. Spin rate.
Rough predictions. All made after the spin, never before. The question became: was it illegal? The legal team checked the records.
The Gaming Act of 1845 was still in force. It contained no mention of electronic devices. There was no ban on using a calculator or phone to make predictions, as long as nothing interfered with the game itself. After three days, charges were filed against the trio: use of an illegal device.
Their lawyers pointed to the law. No interference. No ban. The judge agreed.
There was no evidence of cheating, no proof the wheel or ball had been tampered with. Scotland Yard held the £900,000 check for three months, hoping for a reason to keep it. In the end, there was none. The charges were dropped.
The check was unfrozen. The Ritz Club replaced its wheels, but the money was gone. Marjanovic, Py, and Tossa left London without a criminal record. But they knew the loophole would not last.
Within a year, the UK passed a new law banning any device used to gain an advantage in a casino. The Ritz hired a new security team and retrained staff. Other London casinos tested their wheels for wear and brought in engineers to check for physical flaws. Consultants gave seminars on predictive betting.
Most privately admitted that what happened at the Ritz could have happened anywhere. The trio vanished. Marjanovic was rumored to have left the country. Py returned to Eastern Europe, changed her phone number, and stopped using her real name.
Years later, a journalist tracked Tossa to the Croatian coast. He lived quietly, drove a Ferrari, and owned his own roulette table. He never admitted to using lasers or magnets. He said the secret was knowing the wheel, watching the physics, and staying ahead of the house.
He added that if they had not been stopped, they could have taken tens of millions. Long after the dust settled, questions remained. Was it really just skill and observation? Was there a trick nobody ever found?
And if such a flaw existed on one wheel, how many more were still out there, waiting for someone with the nerve to spot them?