A businessman and his family were executed by three men driven by greed, the Old Bailey has heard.
The defendants are accused of dumping the bodies at sea
Amarjit and Nancy Chohan, their two sons and Mrs Chohan's mother Charanjit Kaur were murdered after "disappearing" said Richard Horwell, prosecuting.
The family from Hounslow, west London, vanished in February 2003.
Kenneth Regan, 54, of Wilton, Wilts, William Horncy, 51, of Bournemouth, Dorset, and Peter Rees, 38, of Rowlands Castle, Portsmouth, all deny murder.
Mr Chohan's body was found in the sea near Bournemouth pier in April and his wife's body recovered in the same area in July.
The body of Mrs Kaur was found in November in a bay off the Isle of Wight but the bodies of the boys are still missing.
Tax evasion conviction
On Monday the jury heard that Mr Regan planned to make people think Mr Chohan had given up his business and gone abroad voluntarily.
Mr Chohan's reputation as a "chancer" in business and previous conviction for tax evasion were used to lend credibility to the story that he had left to avoid business associates.
Mr Horwell said Mr Regan wanted to take control of Mr Chohan's company - CIBA - a freight business importing and exporting fruit from Southall, west London.
He then planned to use the firm as a front for importing drugs and "expected to make a great deal of money".
"Horncy and Rees played important parts and they, no doubt, expected to be handsomely rewarded for their grim contribution," said Mr Horwell
The court was told Mr Regan was "something of a fantasist" who "became desperate for money and desperate to control the company and assets of the man he murdered".
"While Mr Chohan was interested in selling the business, Regan did not have the money to buy it. So Regan decided to steal it," Mr Horwell said.
In order to do this the court heard that Mr Chohan was lured to Stonehenge by Mr Regan, held against his will for several days before being murdered.
"To make Mr Chohan's disappearance appear genuine, it was or became necessary for his family also to be murdered." Mr Horwell said.
Within days, it is alleged the three defendants had buried the family's bodies in the grounds of a house in Tiverton, Devon.
The court heard how Mr Regan's plan would have paid off had it not be for Nancy's brother, Onkar Verma, in New Zealand, who "refused to accept that his mother, his sister and her family would simply have vanished without trace."
As police inquiries were about to turn to Tiverton it is alleged the defendants returned to the farm to dig up the bodies.
"Two days later, the body of Mr Chohan was found floating in the water near Bournemouth pier. It was that unexpected and chance discovery that brought this plan to an end." said Mr Horwell.
The trial continues.