THE BROTHERS Albert Yeung Sau-shing, chairman of Emperor Group, whose businesses range from forex dealing to property. Described as 'a very efficient and imaginative entrepreneur' by former Australian prime minister and business partner Bob Hawke. Other business partners include Jackie Chan, the Cambodian Government and China's Department of Justice. Flamboyant: paid $13 million for the No 9 car plate at an auction. The current case started with an alleged incident on December 9 last year when Mr Yeung had a meeting with a former senior employee, Michael Lam Yih-jiun, who had joined a competitor and was arguing about pay and bonuses he claimed he was due from Emperor. It was alleged, but never proved, that Mr Yeung detained and threatened Mr Lam. Sonny Yeung Hoi-sing, Mr Yeung's younger brother. Mr Albert Yeung has not taken directorships in his companies on the stock exchange, even though he is their largest shareholder. The listed companies are chaired by Mr Sonny Yeung, who was briefly arrested and questioned at the beginning of the investigation into interfering with witnesses in April. No charges were laid. THE WITNESSES Michael Lam Yih-jiun, the alleged victim, who left Emperor in November to join Tse Tak-ching's Gold Dealing and Investment Co. It was alleged that on December 9, at the Mandarin Hotel and Emperor offices, he was threatened with having his leg broken, and was threatened with humiliation, such as having to serve tea to a junior employee. Billed as the prime witness in Albert Yeung's intimidation case, he told Western Court in May he could not remember what had happened. After four others made similar statements, the case collapsed. Mr Lam now stands at the centre of yet another case under the Magistrate's Ordinance, which says anyone who 'refuses to answer questions without reasonable excuse' can be fined $5,000 and spend 12 months in prison, a case which could take two years as his lawyers argue it conflicts with the Bill of Rights. Jacky Man Lun-chi, a director of rival forex firm Yiu Wing and prime prosecution witness in yesterday's case. The alleged middleman was said to have started talking to Mr Yeung about a week after the arrest. Mr Yeung rang the ICAC five hours after being contacted, and a meeting with Mr Man and Mr Yeung at the tycoon's home in Repulse Bay was secretly filmed by the ICAC. The court heard Mr Man boasted that his contacts in the People's Liberation Army could 'get' Mr Lam if he went to China. Mr Man wanted to invest in Tse Tak-ching's forex firm and it was alleged in court that Mr Man was trying to curry favour with Mr Yeung in the hope of reducing competition in the industry. Tse Tak-ching, boss of Tse's Forex and Gold Dealing Investment Co, another forex firm and Michael Lam's new boss. The prosecution case was that Mr Yeung approached Jacky Man, who would in turn ask Mr Tse to 'get' his employee.David Chan Liu-chuen accompanied Jacky Man to Mr Yeung's house for the secretly-taped meeting. Acted to introduce Mr Yeung and Mr Man.Sam Chan, senior employee in Emperor, was reported to have approached Sonny Yeung with a similar offer of help. THE INVESTIGATOR Carmel Chow Jun-lung, the ICAC investigator. He was involved in the key decision to change the terms of Mr Yeung's bail. Initially, Mr Yeung was prevented from speaking to witnesses after his arrest. But on December 26 the bail conditions were changed to allow Mr Yeung to speak to the people alleged to have made offers of help over the trial, with ICAC surveillance. It was he who allegedly wired up Mr Yeung's home. During the trial it was also alleged that the ICAC had tapped Mr Yeung's phone because they had obtained information about meetings which could have been obtained no other way. The ICAC never responded to these allegations. THE TYCOONS Lam Kin-ming, a director of textiles and property group Lai Sun Development, whose interests range from the Ritz-Carlton Hotel to Crocodile Garments. Last year he thwarted an attempt to blackmail him with photos showing him having homosexual sex by releasing the photos to the press. The court heard he approached Mr Yeung saying a friend knew Michael Lam's father and that he could help.Paul Ng Kwok-cheung, chairman of Chi Cheung Investment, a property firm owning the shopping arcade in Chungking Mansions and a partner of Lam Kin-ming. The court heard he also had a friend who knew one of Michael Lam's relatives, and could help Mr Yeung with the case.