Annie Pendry, a widow, comes to Harm for help after her young son, Josh, witnessed a murder while on a class trip to Andrews Air Force Base. After Harm and Josh are the targets of a drive-by shooting, Harm moves Josh and Annie into his apartment — and into his life. Harm discovers that the original crime and the drive-by shooting are tied to a ruthless international arms dealer, but not before Josh is kidnapped by the dealer in order to silence him as a witness.