This isn't really a review, but rather an answer to the question of identifying the poison. The question is mentioned in several reviews as well as various forums on the Internet. Well, the answer is in the film's dialogue. In the scene where the lead character goes to question the widow of the man who committed suicide, the suicide's brother is in the apartment, Upon leaving, the brother discusses the "stolen iridium" which was part of what was mentioned in the document notarized by the lead character, who obviously became a witness to a crime.. So the poison in the plot is the element iridium, but which for the purposes of the plot, more specifically had to be radioisotope iridium-192--a radioactive substance which can cause radiation poisoning.
Review of D.O.A.
