The team investigate the mysterious death of an astronomer after he falls from a cliff during a rare planetary event. Meanwhile, is romance blossoming for Neville?

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.

The team join Naomi in Saint Barnabas when her best friend’s father is murdered at a wedding. Meanwhile, Marlon tries to prepare for his sergeant exams but is easily distracted.

The team investigate the murder of a former children’s home resident. Meanwhile, Marlon sits his sergeant’s exams, and Selwyn meets his daughter for the first time.

The team investigate the murder of a water taxi driver at the same time as Neville receives an anonymous letter warning them a murder is due to take place.

The team must prove Neville’s innocence after Professor Cartwright is murdered. DI Karen Flitcroft from the Department of Policing Standards takes over the investigation. The investigation leads Naomi and Selwyn to Justin West at the preppers commune.