A gunman kills volunteer police officer Laura Grillo in her suburban Dallas home. Investigators must link a bombshell accusation to a game-changing email with a diabolical mastermind who thinks he can outsmart the law. [also shown as S6:E14]
Genres: Crime , Documentary
Keywords: homicide-investigation , interrogation , interview , murder-investigation , murder-suspect , suspicion-of-murder , timeline , true-crime