By Sara Hammel
November 15, 2011 04:30 PM
Red Huber/Orlando Sentinel/Polaris

Casey Anthony was acquitted of murdering her 2-year-old daughter Caylee, but a new movie is set to examine the case through the eyes of a man who believes she escaped justice.

Lifetime is gearing up for a possible TV movie based on the new book Imperfect Justice, Prosecuting Casey Anthony by retired Florida prosecutor Jeff Ashton, Variety is reporting.

The film would tell the story of the three years Ashton and his team spent preparing and prosecuting the Florida woman in a high-profile case that left Ashton feeling Anthony got away with murder.

RELATED: Casey Anthony Prosecutor’s New Book Attacks Defense

“I have seen my share of liars, but never one quite like this,” Ashton writes, according to the Orlando Sentinel.

Fox TV Studios has optioned the rights to the book, though Lifetime hasn’t given the green light to the film yet, Variety reports.

For more on Casey Anthony’s true-crime drama, based on PEOPLE’s unparalleled access at key moments of the case, buy PEOPLE’s book Outrage, available now at