The team must solve a deeply personal case when Dwayne's old mentor is found dead and a text message from beyond the grave says it was murder. DI Goodman tries to unleash his inner gourmand.

The team are baffled when an archaeologist is poisoned during a dig but there is no evidence to prove how it was done. Meanwhile, Neville tests his skills in an island crab-cooking competition.

When a woman reports a murder and is then found strangled, the team are left wondering whether she was reporting her own murder.

The team investigate a preppers commune when one of their members is poisoned inside a locked bunker. Meanwhile, Neville has a series of adventurous dates with Sophie.

The team investigates the murder of an estate agent, who has been killed ahead of the potential sale of local beauty spot St Agatha's Cove. Marlon leads a counterfeit goods case to impress the Commissioner, while love in the air for Neville following an unexpected encounter.