|Season 4, Episode 21|
|Air date||April 22, 2009|
|Written by|| Debra J. Fisher|
|Directed by||Karen Gaviola|
"The Big Wheel"
Guest Cast Edit
- Mark Arnold - Mr. Seager
- Jon Barton - SWAT Leader
- Caroline Bielskis - Mrs. Seager
- John Billingsley - Hugh Rollins
- Gretchen Egolf - Sarah Murphy
- Spencer Garrett - Detective Bill Lancaster
- Anthony Nacarato - Uniform
- John Allen Nelson - Dan Murphy
- Kendall Ryan Sanders - Danny Murphy
- Joy Sudduth - Reporter #2
- Robbie Tucker - Kyle Murphy
- Samantha Zweben - Reporter #1
Bookend Quotes Edit
- David Rossi: Doctor Berton Grebin once said, "To lose a child is to lose a piece of yourself."
- David Rossi: André Maurois wrote, "Without a family, man, alone in the world, trembles with the cold."
- "Shade of gray" is a phrase that is used to refer to anything that is sketchy, superficial, or vague.