Detectives Briscoe and Logan investigate when Florence Manning is severely injured and later dies in hospital when a letter bomb explodes in her apartment. When trace evidence of a radioactive material is found among the debris, the police naturally suspect the dead woman's estranged husband Edward Manning, a renowned physicist. He denies having anything to do with the crime and the police continue their investigation of those who may have had access to nuclear material. The focus is on Max Weiss whose post-doctoral fellowship recently expired and is now working as an apartment building doorman. During questioning he claims that Manning hired him to build and send the bomb but ADA Stone uncovers a different motive: Manning had turned down Weiss' application for a research grant and intended to steal his idea leading Weiss to seek revenge. Getting Manning to testify in court to academic theft will not be easy however.
—garykmcd