Relentless

Five diamonds from a $400-million jewel heist and a dead snitch turn up in the apartment of Las Vegas Detective Jenna Simms. The gems had been hidden by her former lover, a murdered cop on the take. Assigned to a joint undercover operation, Jenna attracts the attention of a drug dealer with links to the heist and organized crime. She is ordered to follow him to Miami to gather intelligence on the diamonds and their probable use to fund a drug buy. There, she plunges into a glamorous and deadly lifestyle aboard a luxury yacht. Key suspects are killed-so are witnesses and enforcers. Is Jenna next?