This movie misrepresents the facts
What really happened
" Doris died in 1993 at the age of 80, following a series of debilitating strokes. She left virtually all of her fortune -- estimated at US$1.3 billion, even though she had given away a considerable amount of money throughout her life -- to a charitable foundation, over which she put her Irish-born butler Bernard Lafferty in charge. A lawsuit initiated by Duke's physician Harry Demopoulos resulted in Lafferty's being discharged. lafferty soon died. "
http://en.wikipedia.org/wiki/Doris_Duke
" Harry Demopoulos is a trustee of the Doris Duke Charitable Foundation, founded upon the death of the billionaire tobacco heiress. When Duke died in 1993 at the age of 80, legal documents revealed she had previously assigned Demopoulos - a longtime friend - coexecutor of her estate. However, a controversial change to her will near her death put her vast fortune in the control of her Irish-born butler, Bernard Lafferty, who Demopoulos described in a subsequent lawsuit as "an illiterate, unstable and even dangerous person."
Arguably, "the butler did it"-- "But the real bombshell came when the litigants produced an affidavit from Tammy Payette, 28, a nurse who had attended to Duke in her final weeks. Payette maintained that Kivowitz (one of Duke's doctors) and Lafferty had conspired to murder Duke through the use of "massive sedation", including morphine and Demerol." [1] This lawsuit resulted in Lafferty's being discharged.[2]"
http://en.wikipedia.org/wiki/Harry_Demopoulos