Concern grows for Jo's safety when she fails to show up for work and further study of the videotape made by Larry Franks yields vital clues to the killer's identity. A frantic search begins for the missing DC when Beth discovers the evidence Rachel was examining has been stolen from the station store – and the culprit makes a break for freedom carrying a gun and ammunition. As Diane and Will lead the search, Stuart and Grace review her casework hoping for a clue to her whereabouts.