CSI: Miami Episode 8.21 Meltdown

On a high speed chase Horatio is unable to track down the two masked thieves fleeing from high end jewelry story robbery when their motorcycles disappear in thin air. Our victim, Ben Rooney, was in the store to purchase an engagement ring but was brutally shot while attempting to apprehend the thieves. CSI locates the get away truck that the motorcycles disappeared into and discover Jake Berkeley, undercover cop and ex-boyfriend to Calleigh, was behind the wheel. While tracking down Jake we find him in a warehouse where a shoot out is taking place and Jake kills Joe Tepper, one of the masterminds who recently discovered who Jake really was. We enter a world of high stakes jewelry thieves who only want gold, not diamonds. With the price of gold skyrocketing our thieves steal gold, melt and remold and then sell them leaving no trace behind. From examining a memory card taken off Tepper, we discover a photo of the jewelry case key taken from a real estate office across from the store; which turns out to be owned by Ben, the man who was killed during the robbery. After interrogating Kayla, Ben's girlfriend, we learn they had only known each other for three weeks. Natalia's hearing aide is receiving a lot of interference and she shockingly discovers that Delko is wearing a wire as he is investigating the missing evidence case for the FBI under the guise of "helping out". Seems expensive evidence from the evidence room has been disappearing for months one of it being an envelope of diamonds that our thieves left behind in their warehouse. In the end they uncover that the thieves are women; one of whom is Kayla, Ben's girlfriend. He was just a mark that she actually fell for and in the end he dies heartbroken as they recognize each other during a scuffle right before her partner in crime shoots him.