When the kids are opening their lockers, they enter the code, then pull on the lock to open the locker. The closed lock is still attached to the front of the locker. When they close it, it's magically locked again without them ever opening or closing the lock. In reality, these locks would be useless, or the locker doors wouldn't open.

Genre  
Crime drama
Suspense
Police procedural
Psychological thriller
Mystery
Format    Serial drama
Developed by    James Manos, Jr.
Starring  
Michael C. Hall
Jennifer Carpenter
Desmond Harrington
C.S. Lee
Lauren Vélez
David Zayas
James Remar
Julie Benz
Erik King
Narrated by    Michael C. Hall
Theme music composer    Rolfe Kent
Composer(s)    Daniel Licht
Country of origin    United States
Language(s)  
English
Spanish
No. of seasons    6
No. of episodes    62 (List of episodes)
Production
Executive producer(s)  
Daniel Cerone
Sara Colleton
Charles H. Eglee
John Goldwyn
Michael C. Hall
Chip Johannessen
Clyde Phillips
Location(s)    Miami, Florida
Running time    50 minutes
Distributor    CBS Television Distribution
Broadcast
Original channel    Showtime
Picture format  
480i (SDTV)
1080i (HDTV)
Audio format    Surround sound
Original run    October 1, 2006 – present

Genre    Period drama
Created by    Matthew Weiner
Written by    Matthew Weiner
Lisa Albert
Jane Anderson
Rick Cleveland
Andrew Colville
Kater Gordon
Cathryn Humphris
Andre Jacquemetton
Maria Jacquemetton
Brett Johnson
Erin Levy
Marti Noxon
Tom Palmer
Chris Provenzano
Robin Veith
Dahvi Waller
among others
Starring    Jon Hamm
Elisabeth Moss
Vincent Kartheiser
January Jones
Christina Hendricks
Jared Harris
Aaron Staton
Rich Sommer
Alison Brie
Kiernan Shipka
Robert Morse
John Slattery
Michael Gladis
Bryan Batt
Opening theme    "A Beautiful Mine" (Instrumental)
by RJD2
Composer(s)    David Carbonara
Country of origin    United States
Language(s)    English
No. of seasons    4
No. of episodes    52 (List of episodes)