Fair rating? 0 0NCIS· Season 4 · Episode 19Grace PeriodS04E19·7.9·April 3, 2007·1h·CBSThe NCIS team discovers a tip about terrorist activity was a trap that resulted in the death of two agents. Blaming herself, Agent Cassidy works with the NCIS team to track down the people responsible.Streaming on (US) See allShare#10In Season 4of 24 rated episodes#146All-timeof 507 rated episodes+0.0vs season avgSeason 4 averages 7.92007First airedApril 3, 2007PreviousIcemanS04E18 · 7.4NextCover StoryS04E20 · 7.7Keep going