Selwyn's return to Saint Marie is disrupted by a suspicious death at Government House, where a man has fallen from the roof to his death. It looks like a suicide, but DI Mervin Wilson suspects foul play. However, no one was on the roof with the victim when he fell, and he'd locked the roof door behind him. So, if this man was pushed, how did it happen?

Meanwhile, Mervin is anxious to finally meet his half-brother Solomon, the other son of the mother Mervin never knew. Granted, the pair have never met before, but family's family! Surely, they'll get on like a house on fire?

Mervin and the team are left perplexed when a reclusive pensioner is shot dead in his home. A prime suspect is quickly established in the form of an unassuming accountant. The evidence seems damning – a figure matching the suspect's description was witnessed fleeing the crime scene. And when questioned, there's clearly something shifty about this guy. The only problem? He's got a rock-solid alibi.

Meanwhile, the commissioner is determined to get the islanders back on side with a community-focused initiative. But tensions rise when Mervin goes rogue during the launch event.