25 Episodes 2005 - 2006
Season 4 begins with Horatio (David Caruso) confessing to a priest about a killing that took place more than 20 years ago in New York. It's later learned that Horatio's mother was murdered.\ But his quiet confession is disrupted by gunfire in a cemetery near the church that claims the life of a prisoner. The investigation reveals that Mala Noche, an extremely dangerous mob-related gang, are responsible and that they may be targeting Horatio. Back in the lab, Natalie Boa Vista (Eva La Rue), an expert DNA technician specializing in cold cases, begins work and catches the eyes of Eric Delko (Adam Rodriguez) and Ryan Wolfe (Jonathan Togo). Another woman catching Ryan's attention is aggressive TV reporter Erica Sikes (Amy Laughlin), who proves to be a thorn in his side. Later, Ryan's future as a CSI is placed in jeopardy when he is shot with a nail gun in the corner of his right eye. As for Horatio, his girlfriend Rachel (Kimberly Page) is murdered and he becomes a suspect in the case. He claims he is being framed by Walter Resden (Damian Young), a serial killer he pursued 10 years ago in New York. Horatio's Internal Affairs nemesis Rick Stetler (David Lee Smith) isn't convinced. Making things even worse, a department mole is parceling out damaging information about the lab to the Feds. But not everything is gloomy for Horatio. He begins a romance with Delko's sister Marisol (Alana De La Garza), who has cancer. As for Delko, he comes under fire when a murder suspect claims Delko buys marijuana from him. Alexx Woods (Khandi Alexander) also feels the heat when a registered sex offender living in her neighborhood is beaten to death and the cause may be directly related to Alexx hanging posters warning neighbors of the man's presence. In addition, Calleigh Duquesne (Emily Procter) considers making a job change, and Mac Taylor (Gary Sinise) from the New York crime lab arrives in Miami to pursue an escaped killer.
From the Grave
Mon, Sep 19, 2005 60 mins
A gang-related shooting occurs in a cemetery near a church where Horatio is confessing to a priest about a killing that took place years ago in New York and still haunts him.
Blood in the Water
Mon, Sep 26, 2005 60 mins
Two family members are killed after their yacht catches fire in the Atlantic and they jump overboard where sharks attack them.
Mon, Oct 3, 2005 60 mins
A high-school student disappears after a wild night of partying at a downtown club. Meanwhile, Stetler confronts Horatio about a case in Horatio's past in New York.
48 Hours to Life
Mon, Oct 10, 2005 60 mins
A young man confesses to the murder of a woman on a boat and is sent to prison, but Horatio doesn't believe him and tries to prove that the man is innocent.
Mon, Oct 17, 2005 60 mins
A 24-year-old pool boy working at a five-star Miami hotel is found dead on the hotel's lawn. Meanwhile, Horatio learns that someone in the department is out to bring his team down.
Mon, Oct 24, 2005 60 mins
Horatio is suspected of killing his girlfriend after her body is found in a river. Meanwhile, Alexx becomes concerned about Delko when she learns that he's short on cash.
Mon, Nov 7, 2005 60 mins
A crossover episode that concludes on "CSI: NY" begins with a convicted serial killer who escapes after sabotaging an airplane that was flying him from New York to Miami, where he allegedly buried a body.
Mon, Nov 14, 2005 60 mins
A woman, recently separated from her husband, is found dead in his house with four nails sticking out of her upper torso and neck. Back at the lab, Horatio is confronted by Stetler about the New York investigation into the death of the man who murdered Caine's mother more than 20 years ago.
Mon, Nov 21, 2005 60 mins
Three masked gunmen burst into and rob a Miami bank where Delko is one of the customers. Later, Ryan receives some astonishing information about the crime lab that leaves him stunned.
Mon, Nov 28, 2005 60 mins
A drug lord is gunned down in his Coconut Grove mansion and a suspect arrested at the scene claims he sells marijuana to Delko. Stetler, from Internal Affairs, investigates and the case quickly gets personal when Horatio gets involved. Also, Calleigh makes a major decision concerning her job.
Mon, Dec 19, 2005 60 mins
Horatio searches for a rapist who attacked a woman six years ago in her new home after the man imprisoned for the assault is discovered to be innocent through a DNA test and released from jail. In the lab, Alexx discovers that a young woman who was thought to have been killed in a car accident actually died from a botched surgery.
Mon, Jan 9, 2006 60 mins
A man attending a swinging party at a private downtown club is later found dead in one of the facility's bedroom suites with multiple ice-pick stab wounds in his neck and the letter "L" written on his chest. The victim was part of a seminar that taught men how to pick up women. Also, Delko's sister, Marisol, is arrested for possession of five bags of marijuana, a felony. Horatio tries to keep it quiet, but the information leaks out due to a mole in the department.
Mon, Jan 23, 2006 60 mins
A man and a woman watching dancers at a beach pavilion are gunned down and Horatio believes the Mala Noche gang is responsible after he sees one of their tattoos on the dead man's chest. The investigation reveals that the shooter used a silencer. When a trace of an unknown drug is discovered on the woman's body, the probe shifts to the pharmaceutical company that manufactures it. Also, Delko learns that Horatio is seeing his sister, Marisol.
Mon, Jan 30, 2006 60 mins
A dead man is discovered swinging from a noose attached to a drawbridge. Both of his eyes are shot out and a joker playing card is found in his pocket. Horatio believes the crime is a mob hit. The investigation reveals that the victim ran five of the hottest clubs in South Beach and that the gun used to kill him is connected to another murder believed to be mob-related. Also, Horatio takes Ryan off of the case after learning he was in a car accident caused by his poor eyesight.
Mon, Feb 6, 2006 60 mins
Walter Resden, an alleged serial killer who eluded Horatio 11 years ago in New York and again more recently in Miami, returns, and Horatio is horrified when he learns that the man is seeing the daughter of one of his alleged victims. The hunt for Resden begins when a man's body is found in a volleyball pit during a match and a house key is discovered in the victim's throat. Back at the lab, Natalia fears that she may be pregnant with Delko's baby.
Mon, Feb 27, 2006 60 mins
A registered sex offender living in Alexx's neighborhood dies after being attacked by four men near a park. The victim was allegedly accosting a girl just before his death. The investigation reveals that Alexx put up posters in the neighborhood warning parents that a sex offender was now living nearby. Horatio fears that the posters may have led to the murder and that Alexx could be held responsible in civil court.
Mon, Mar 6, 2006 60 mins
A woman is killed when her car smashes into a barrier. When Horatio arrives on the scene, he discovers a man's dead body in the car's trunk. The investigation reveals that another vehicle was involved in the wreck and that a $4-million necklace was stolen from the crime scene. Back at the lab, Natalia's secretive past comes to light when Horatio asks for her help in the investigation.
Mon, Mar 13, 2006 60 mins
A man goes on trial for his wife's murder, even though her body was never found, and the jury finds him to be not guilty. But shortly after the suspect goes free, the victim's body turns up in a fishing boat's net and Horatio becomes determined to put the man away. Horatio comes to believe that the suspect committed a so-called practice murder to prepare himself to kill his wife. The investigation also reveals that the wife's killing may have been racially motivated.
Mon, Mar 20, 2006 60 mins
Three masked men rob women at a Coconut Grove day spa, one of whom is shot when she fights back with pepper spray. When Horatio arrives on the scene, he learns that another woman injured in the attack is Marisol. The investigation becomes more urgent when it is discovered that the shooter is now breaking into the women's homes. Later, Horatio and Marisol make a surprising decision.
Mon, Apr 10, 2006 60 mins
Two brothers, both shot in the back of the head, are found in a bathtub in a dilapidated hotel that is scheduled to be gutted and then remodeled. One of the victims is dead, but the other one clings to life. The investigation reveals the shootings are linked to a drug dealer's money-laundering scheme and to a previous case in which two young lovers stole a car and some cash outside of a bank. Also, Ryan worries a news reporter is getting too involved in the story for her own good.
Mon, Apr 24, 2006 60 mins
Horatio searches for a kidnapped woman after the victim makes a random cell-phone call from inside the trunk of a car pleading for help. The investigation reveals that she's being held for ransom and that the kidnappers want $5 million or they will kill her. Back at the lab, Delko learns that Natalia threw a party but didn't invite him and that Ryan is interested in asking Natalia out.
Mon, May 1, 2006 60 mins
A newlywed who was married on a cruise ship dies after he is pushed overboard by someone and then attacked by sharks. The investigation reveals that the victim was a millionaire and that $70,000 is missing from his room's safe. It's also learned that he was drugged and that his bride of three days has a 16-year-old daughter. Back on dry land, Marisol is harassed by a federal agent who questions her about Horatio and the lab.
Mon, May 8, 2006 60 mins
A young socialite who is famous for being famous is murdered during a party at her lush oceanfront house, electrocuted in her own bathtub with a tanning lamp. The investigation reveals that the victim's rival was at the party and that the dead woman had a drug problem. The probe leads Horatio to uncover a drug ring that uses kidnapped women from El Salvador as slave labor. Also, Horatio gives Delko some surprising news about himself and Marisol.
Mon, May 15, 2006 60 mins
A member of the Mala Noche gang escapes from the courtroom during his own trial and the gang order a hit on Horatio, but they instead shoot someone close to him. Meanwhile, Delko deals with a jilted former lover who seeks to hurt the other women in his life and who believes that Marisol is his wife, not his sister.
One of Our Own
Mon, May 22, 2006 60 mins
Horatio searches for the Mala Noche gang member who ordered Marisol's murder. In addition, five Mala Noches are gunned down at one of their safe houses. Back at the lab, FBI agents claim that someone stole $12,000 that was confiscated from a recent crime scene. As their probe intensifies, the department mole is revealed. Finally, Horatio learns a surprising fact about Marisol.