While there, Horatio meets Yelina and learns that his brother may be connected to Riaz. Horatio and Delko travel to Rio to find that Riaz, the man responsible for Marisol's murder, has been released from custody. Johnny Whitworth as Jake Berkeley an undercover MDPD Narcotics Detective.Rob Estes as Nick Townsend Natalia's ex-husband.Sofia Milos as Yelina Salas a Private Investigator.Eva LaRue as Natalia Boa Vista a CSI Detective and former FBI Agent.Rex Linn as Frank Tripp a senior Robbery-Homicide Division (RHD) Detective assigned to assist the CSI's.Jonathan Togo as Ryan Wolfe a CSI Detective and Delko's partner.Khandi Alexander as Alexx Woods a Medical Examiner assigned to CSI.Adam Rodriguez as Eric Delko a CSI Detective and Wolfe's partner.Emily Procter as Calleigh Duquesne a veteran CSI Detective, the CSI Assistant Supervisor and a ballistics expert.David Caruso as Horatio Caine a CSI Lieutenant and the Director of the MDPD Crime Lab.

Ultimately, however, it's Delko, once again, who faces the biggest challenge, as he fights for his life following a gunshot wound to the head.

Tripp comes face to face with death after stepping on a landmine. Boa Vista is confronted by her abusive ex-husband again, while Caine and Delko seek to revenge those responsible for the death of Marisol. As Wolfe accidentally becomes involved in counterfeiting, Duquesne's life is endangered due to her involvement in an investigation surrounding gang warfare. All of this just in time for them to investigate not only external crimes committed against the general public but also internal issues. With Caine and Delko in Brazil, it's up to Duquesne to maintain the department following Natalia's transfer to the MDPD.

Csi miami season 5 episode 1