When the death of a local oil magnate stuns Aberdeen, trainee detective Davis Lindo is thrown in at the deep end and forced to navigate a city and force completely alien to him.

As the search for Isla gets under way, Lindo continues to investigate Clellan’s murder. A surprise visitor to the station stuns the team, leading to a high-profile arrest.

As MacMillan and the team grill Shay, Lindo continues to investigate Clellan’s death, leading to a shocking discovery with potentially fatal consequences.

After two fatal cases are reported, Lindo, Bart and the team investigate and soon find themselves immersed in Aberdeen’s shipping industry and drug underworld.

When breakthroughs are made in both cases, the stakes are raised further and loyalties are put to the test, with brutal consequences for both police and criminals alike.

As both cases reach a stunning conclusion, Lindo and Bart face a race against time to save innocent lives, whilst the depth of various betrayals are finally revealed.