After deaf woman, Darlene VanderGiesen, uncharacteristically misses two days of work, detectives begin investigating. Interviews with friends and family lead them to her boyfriend, Jeff Hakeman. After a thorough inspection, Hakeman is cleared of any wrong-doing. When Special Agent Dayle Hinman reviews the VanderGiesen case file, she confirms detectives' suspicions that the woman has met with foul play. Investigators delve into VanderGiesen's computer, where threatening emails are discovered. They track down the writer, Daphne Wright, a female friend of VanderGiesen's. Earlier interviews reveal that Wright was jealous that VanderGiesen had struck up a friendship with her ex-girlfriend. Can police prove that the author of a vicious letter could also be a killer?