The fifth season of CSI: Miami kicks off after an explosive fourth season in which long-held secrets were revealed, and someone close to the hearts of the team was brutally murdered. Despite the tragedy, former homicide detective Horatio Caine continues to lead his dedicated group of investigators, including 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; and Ryan Wolfe, who still hopes to find his place within the team after almost two years on the job. Rounding out the team is Alexx Woods, the no-nonsense know-it-all coroner, and Natalia Boa Vista, the enigmatic "grant girl" and DNA specialist assigned to solving cold cases. Helping Horatio with cases is Detective Frank Tripp, a tough, 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.