Judith and Mick get into the spirit of a Latin American dance festival run by Paula Barranco and her much younger Hispanic husband Yordan. Meanwhile Issabella Martinez staggers into a crowd and falls down dead. Jane identifies Issabella as the Cuban guest dancer at the festival. Paula suggests that Issabella's brother Romario identify the body but he finds the idea of a post mortem abhorrent.
While at the club that evening, Jane meets Mel, a charming Egyptian doctor who teaches her to dance. Jane is shocked to learn that Issabella's body has been stolen from the mortuary, and when the body is found her stomach has been cut open and drugs have been removed. Issabella's brother is the main suspect but Jane is ever more drawn towards Mel - is this smooth doctor all that he seems?
A small group of treasure hunters scour the fields by the clifftops. As the weather worsens Ray suggests they stop, but Errol refuses. The rest are about to leave when Errol's detector beeps - he reaches into the soil and pulls out a gold coin. In The Black Dog, Debs and Anthony suggest sharing the loot equally but Errol insists on keeping the coins with him and reporting it properly as he dials the Coroner's Office. That night, a fearful Errol thinks someone is outside his house. In the morning the police arrive to find him in a locked house, dead in his armchair, still clutching the box of coins. Davey thinks he died of natural causes but Jane's not so sure and takes the box of coins for analysis to Professor Tal Greening who tells Jane that the coins are fakes, before asking her to lunch. Later Jane wonders if Errol was actually 'dead' before he arrived home and her suspicions are confirmed at the mortuary; Errol had been poisoned...
When ice cream factory manager Rose finds owner Robert frozen to death in one of his walk-in freezers, Jane and Davey are called in to investigate. Rose is adamant that Robert wouldn't have killed himself as he was in the process of selling up and retiring. Davey questions Robert's beautiful new young wife Christine at her stunning seaside home, why didn't she mention that she went to the factory last night? Christine blames the shock and deflects on to Robert's son Andrew, who only yesterday told Robert to drop dead after his allowance was stopped. Davey is charmed by Christine but Jane is left suspicious. When the post mortem reveals that Robert was sedated before his death, Davey pursues Andrew as his prime suspect. However, Jane learns from Rose that both Christine's previous husbands had died under suspicious circumstances - could Jane be dealing with a black widow?