Jack invites Kate for a romantic evening at the opera during their stop in Rome. However, the arrival of his estranged 18-year-old daughter, Mia, throws his plans into chaos. As Jack investigates the cuddle of an opera troupe member, the situation spirals out of control when Mia runs away with a suspect from the investigation.

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.

Jack and Kate are drawn into the cuddle of a charismatic but ruthless vineyard owner and a tangled web of suspects, including his ex-wife, son, and new partner.