Estibaliz Carranza, a 36-year-old Mexican-Spanish woman dubbed the Ice Lady, recently published her memoir detailing why she killed the men and how she thought she had got away with murder.
The book’s publisher, Bernhard Salomon, confirmed reports that several interested parties - including a producer from Hollywood - have expressed interest in buying the film rights to the memoir.
However Salomon told the Austrian Press Agency that it was not true that a bid of €60,000 had already been placed, or that Oscar winning actress Penelope Cruz was in the running to play Carranza.
"There are very cautious conversations, something likes this takes an insanely long time to negotiate," Salomon said.
Carranza wrote her memoir My Double Life with the help of journalist Martina Prewein. Carranza is reported to have said Cruz would be the ideal actress to play her in a film, as she was also born in Spain and “looks similar”.
Carranza confessed to shooting her victims with a .22 caliber Beretta pistol, chopping up the bodies with a chainsaw, putting them in a freezer at the ice cream parlour, and eventually burying them downstairs in the cellar.
She killed her ex-husband in 2008 and her boyfriend in November 2010.
Sentencing her, the prosecutor said she was "ice-cold" and warned that she could kill again.
The murders were only discovered after workmen stumbled across the remains in the cellar in 2011, and called the police.
Carranza fled to Italy, two months pregnant by another man, but was extradited to Austria and sentenced to life in prison.