Author's Note: So because this is fiction I decided to make up a few OCs and Precincts/Crossover others. Also, like early SVU (where there's four detectives as main characters and serve in the same precinct at the same time), so will my other precincts. These four detectives work together! The exception is the 12th Precinct.

27th Precinct:
* Van Buren is head of the 27th Precinct [she takes over for Don Cragen when he's sent to SVU]
* Lennie Briscoe and his partner Ed Green
* Mike Logan and his partner Phil Cerreta

* Miscellaneous Officers- Detective Tony Profaci
District Attorney: Adam Schiff
27th ADA(s): Ben Stone and Paul Robinette
Major Defense Rival: Shambala Green
Psychologist consultant: Dr. Elizabeth Olivet

16th Precinct:
* Don Cragen is head of the SVU
* Elliot Stabler and Olivia Benson
* John Munch and Fin Tutuola
SVU District Attorney Bureau Chief: Elizabeth Donnelly
SVU ADA(s): Alexandra Cabot and Laura Raines
Major Defense Rival: Donna Emmett
Psychologist consultant: Dr. George Huang

1PP:
* Danny Ross is head of the Major Case Squad
* Alexandra Eames and Bobby Goren
* Zackary Nichols and Paul Falsone
District Attorney Bureau Chief: Arthur Branch
Major Case ADA(s): Ron Carver and Gilbert Livingston (played by Arye Gross)
Major Defense Rival: Matthew Braden
Psychologist consultant: Dr. Emil Skoda

20th Precinct:
* Jimmy Deakins is head of the 20th Precinct
* Cyrus Lupo and Kevin Bernard
* Rey Curtis and Monique Jeffries
District Attorney Bureau Chief: Alfred Wentworth
20th ADA(s): Jake McCoy and Claire Kincaid
Major Defense Rival: Lionel Granger
Psychologist consultant: Dr. Cap Jackson

32nd Precinct:
* Alphonse Giardello is head of the 32nd Precinct
* Ken Briscoe and Dani Beck
* Kat Miller and Brian Cassidy
District Attorney Bureau Chief: Martin Hastings (played by George Coe)
32nd ADA(s): Jason Scanlon (played by Dave Boreanaz) and Abbie Carmichael
Major Defense Rival: Roger Kressler
Psychologist consultant: Dr. Stanley Maxwell (from The West Wing)

7th Precinct:
* John Stillman is head of the 7th Precinct
* Will Jeffries and Nick Vera
* Lilly Rush and Scotty Amaro
District Attorney Bureau Chief: Sol Crenshaw (played by Theodore Bikel)
7th ADA(s): Rafael Barba and Casey Novak
Major Defense Rival: Oliver Gates
Psychologist consultant: Dr. Rebecca Hendrix

12th Precinct:
* Barney Miller is head of the 12 Precinct

* Detective Ron Harris and Detective Stan "Wojo" Wojciehowicz

* Detective Phillip K. Fish and Detective Miguel "Chano" Amanguale

* Detective Nick Yemana and Detective Arthur P. Dietrich

* Miscellaneous Officers-Franklin D. Luger, Officer Carl Levitt

District Attorney Bureau Chief: Mark Jefferies
12th ADA(s): Lawrence O'Hannon (played by Richard Crenna) and Maria Battista (played by June Gable)
Major Defense Rival: Arnold Ripner
Psychologist consultant: Dr. Joseph Pretano (played by Madison Mason)