Castle: Season 6 Episode 8: A Murder Is Forever
Starring: Nathan Fillion, Stana Katic, Susan Sullivan, Jon Huertas, Seamus Dever, Tamala Jones, John Hans Tester, Dominic Hoffman
Length: 43 minutes
Castle: S06E08 Description: A renowned relationship therapist is murdered. The team investigate a couple whose files are missing from the office, and find a perfect, priceless, 100 karat diamond is at the heart of the mystery.