Patrick Clarkson (Kevin Corrigan); he appeared in "About Face", where he kidnapped Natalia Boa Vista, but was ultimately caught and incarcerated. The fourth was Dante Kroll (Franky G); he appeared in "Caged", where he killed Logan Shepherd, the man who testified to put him behind bars. Dante was ultimately killed by Horatio in his warehouse after trying to shoot Horatio. The fifth and last was Jack Toller (Callum Keith Rennie), a serial arsonist. He appeared in the season finale "Mayday", where he blackmailed Randy North (Ethan Embry) into shooting Horatio and drowning Natalia (the two ultimately survived). Toller and Randy were finally caught in the season 10 premiere "Countermeasures". Estaban Navarro a.k.a. The Miami Taunter (Kuno Becker, season 10): Esteban is a sadistic serial killer who targeted prostitutes who came to his clinic. He appeared as the main antagonist of the episodes "Look Who's Taunting", "Dead Ringer" and "Rest In Pieces", being finally caught in the end of the last one. When Samantha Owens was accused of mishandling evidence "Law and Disorder", he was let out of prison due to his lawyer, Darren Vogel's, claims. After this it is unknown if he was re-imprisoned or set free altogether. Others Special Agent Dennis Sackheim (Tom Hillmann, seasons 1–2): An FBI agent first introduced in the crossover episode, "Cross Jurisdictions" who had a contemptuous working relationship with Horatio Caine. In their first scene together, Caine confronts Sackheim for meddling in a Miami-Dade crime that may have resulted in an unnecessary death. Later they are on the waterfront at night, assuming the killer is on the boat, when in fact it is one of the killer's victims. Sackheim orders his sharp shooter to "take him out!" and Caine intercedes at the last minute, saving the victim's life. Secret Service Special Agent Peter Elliott (Michael B. Silver, seasons 2–5): Working in the Secret Service's Financial Crime Division, Agent Elliott had an obvious infatuation with Calleigh Duquesne that interested her, but she stopped short when she found out, after taking him to the hospital for a gunshot wound, that he was engaged to another woman. At the end of the season, it was revealed that his fiancée, Monica West, was the one that impugned the CSI lab and stole drug money seized in a raid; she caused the FBI to investigate, hoping that discrediting the lab would help her out politically. Elliot, wearing a wire,