A DARK SECRET FROM HORATIO'S PAST COLLIDES WITH MIAMI'S NEW AND MOST DANGEROUS MAFIA, ON THE FOURTH SEASON PREMIERE OF "CSI: MIAMI," MONDAY, SEPT. 19 ON THE CBS TELEVISION NETWORK

Rex Linn (Det. Frank Tripp) and Eva La Rue ("All My Children") Join the Cast as Series Regulars

Scenes Shot on Location in Miami, Florida with Local Dignitaries

"From the Grave" -- Horatio's secret past collides with Miami's new and extremely dangerous mafia, on the fourth season premiere of CSI: MIAMI, Monday, Sept. 19 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Karen Gaviola directed the episode written by Executive Producer Ann Donahue and Co-Executive Producer Elizabeth Devine.

Rex Linn (Det. Frank Tripp) and Eva La Rue ("All My Children") join the cast as series regulars.

Horatio takes confession with a New York City Cardinal who is one of only a few people who know of the deadly crime he committed in his past. Meanwhile, Miami's fiercest gang seeks revenge on a rival gang member and opens fire at his mother's funeral. When the gang discovers that Horatio plans to find them and destroy their illegal smuggling operation, they put out a hit on Horatio. Also, Natalia Boa Vista (La Rue), a new CSI lab technician, creates conflict with a different government agenda from that of the team.

Scenes were shot on location in Miami, Florida with special appearances by Floridian government officials including Senator Rudy Garcia, Senator Richard Renick, State Representative Don Davis, State Representative Julio Robaina, Incoming Speaker of the House of Representatives Marco Rubio, Mayor of Coral Gables Don Slesnick and Attorney Paul Wallace.

CSI: MIAMI is a fast-paced drama inspired by the top-rated series "CSI: Crime Scene Investigation" that follows a South Florida team of forensic investigators who use both cutting-edge scientific methods and old-fashioned police work to solve crimes. Horatio Caine, a former homicide detective, heads a group of investigators who work crimes amid the steamy tropical surroundings and cultural crossroads of Miami. His team includes Calleigh Duquesne, a bilingual Southern beauty with a specialty in ballistics, Eric Delko, an underwater recovery expert who knows all the twists and turns of the Florida waterways, Ryan Wolfe, who joined Horatio's unit last year and Natalia Boa Vista who's grant funding causes conflict in the lab. Rounding out the team is Alexx Woods, the no-nonsense know-it-all coroner. Helping Horatio with cases is Det. Frank Tripp, a tough, yet thorough police officer. Together, these investigators collect and analyze the evidence to solve the crimes and to avenge those who cannot speak for themselves, the victims.

CSI: MIAMI is produced by CBS Productions and Alliance Atlantis Communications, in association with Jerry Bruckheimer Productions. Jerry Bruckheimer, Ann Donahue, Carol Mendelsohn, Anthony Zuiker, Jonathan Littman, Danny Cannon are the Executive Producers.

Horatio Caine: David Caruso
Calleigh Duquesne: Emily Procter
Eric Delko: Adam Rodriguez
Alexx Woods: Khandi Alexander
Ryan Wolfe: Jonathan Togo
Det. Frank Tripp: Rex Linn
Cardinal Benedetti: Jerry Adler
Miguel Fuentes: Giovanni Lopes
Diablo: Rhys Coiro
Michelle Burke: Amanda Loncar
Erica Sikes: Amy Laughlin
Rick Stetler: David Lee Smith
Celia Gonzalez: Patricia Velasquez
Dale Livingston: Steven Eckholdt
Amanda Livingston: Tara Westwood
Paramedic: Charles Griffin
Natalia Boa Vista: Eva La Rue
Senator Rudy Garcia: Himself
Dan Cooper: Brendan Fehr
Dr. Joyce Carmel: Lesley Fera
Aaron Peters: Armando Valdes-Kennedy
Paula Muro: Shelli Bergh
Raphael Sifuentes: Lobo Sebastian
SWAT Leader: Dexter Fletcher
Valera: Boti Bliss
Agent Maxwell: Simone Kessell
Noche Sniper #1: Will Morales
Marisol Fuentes: Julia Vera

RATING: To Be Announced