Wormwood is an allusion to a Bible verse about a star that makes everything bitter , an allusion to biological weapons , and the effect of Eric Olson ’s search for a resolution regarding the death of his father for 60 years . Errol Morris said that " What '' Wormwood '' tries to do is tell a story about how we know what we know and how reliable is that knowledge . " A key piece of evidence the film relies on is a CIA assassination manual from 1953 , which instructs agents , " The most efficient accident , in simple assassination , is a fall of 75 feet or more onto a hard surface . " In order to be eligible for the Academy Award for Best Documentary Feature at the 90th Academy Awards , the series was recut into a continuous feature after the Academy of Motion Picture Arts and Sciences ( AMPAS ) ruled that multi-part documentary series ( such as 2017 winner '' O.J. : Made in America '' ) were ineligible . However , the series was rejected from consideration by AMPAS for the documentary feature category , although it remains eligible in all other categories
90th Academy Awards
90th Academy Awards
Wormwood (miniseries)