Festivities take a back seat as DI Parker investigates the murder of a podcaster. She had been probing the disappearance of a child and claimed to have found new evidence. The missing child has haunted Commissioner Patterson for years.

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 investigate the murder of an estate agent during the private sale of a picturesque beach. Meanwhile, Marlon leads a counterfeit goods case to impress the Commissioner.

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 after Neville receives an anonymous letter warning him a murder will take place that day.

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.

The team investigate the murder of a renowned calypso singer's husband. Meanwhile, Neville struggles with Sophie's revelations and contemplates his future in Saint Marie.