Jack and Kate are still reeling from their fallout in Rome, each trying to suppress their growing feelings. Adding fuel to the fire, Piers steps into his new role as Staff Captain with calculated charm, hoping to rekindle his relationship with Kate. When Jack recognises a familiar face - a notorious ex-con named Mickey Eldergill - things take a sinister turn. Rumours swirl about stolen bullion tied to Mickey's past, and Jack warns Kate to keep her distance. But her detective instincts pull her back into the fray, especially when one of Mickey's henchmen is found murdered during a tour excursion. And Piers's rivalry with Jack takes a turn, setting the stage for a battle of wills that threatens both men's futures.