Det. Beauregard 'Beau' Felton(Daniel Baldwin)
Det. Stanley 'Stan' Bolander(Ned Beatty)
Det. John Munch(Richard Belzer)
Det. Francis Xavier 'Frank' Pembleton(Andre Braugher)
Det. Michael Scott 'Mike' Kellerman(Reed Diamond)
Ag. Speciale Mike Giardello(Giancarlo Esposito)
Dr. Julianna Cox(Michelle Forbes)
Det. Stuart Gharty(Peter Gerety)
Ten./Cap./Det. Megan Russert(Isabella Hofmann)
Det. Meldrick Lewis(Clark Johnson)
Ten. Al 'Gee' Giardello(Yaphet Kotto)
Det./Serg. Kay Howard(Melissa Leo)
Det. Terri Stivers(Toni Lewis)
Det. Rene Sheppard(Michael Michele)
JH James Brodie(Max Perlich)