The holiday season is off to a rocky start when the ship's resident Santa falls ill, threatening to disappoint the passengers. Bev puts Jack in charge of finding a replacement Santa, and his search leads him to Buddy, a veteran comedian in Dubrovnik who seems like the perfect fit. However, unexpected events complicate Jack's plan, leaving everyone scrambling to save Christmas on board...

Meanwhile, Jamil sees the Santa situation as his big chance. Inspired by Jack and dreaming of a life on stage, he volunteers to play an elf, diving into the role with enthusiasm and giving it his all.

Jack sets himself a personal mission: to rekindle Kate's Christmas spirit and show her the magic of the festive season. As they spend more time together, their connection deepens, leaving everyone wondering if this Christmas will bring them closer together.

In the midst of the holiday excitement, there's a bit of tension between Kate and Piers as they navigate working together after their breakup. Piers faces a new career opportunity, prompting him to consider a big decision about his future.

Adding to the ship's changing dynamic, the new Head of Security, Frankie, steps into her role and quickly makes her presence known. Bev, too, is faced with an exciting new opportunity that could lead her to embark on a fresh chapter.

It's the last journey of the season, but will dramatic events in Valetta make it Jack and Kate's final destination?

The presence of legendary singer Vida Devine onboard the ship produces a frenzy of fans, and members of the press circle the star like hungry sharks.

Someone claims to have a scoop on Vida, while another passenger believes her most famous song holds a special significance for them. With Vida conflicted about her celebrity and longing for a simpler life, things are complicated enough even before there's a murder in Malta.

With Jack and Kate's relationship on the rocks since Kate's engagement, the pair struggle to put their differences behind them to solve a case involving buried identities and lost relationships.

To further complicate things, a job offer for Jack means it could be goodbye forever for the singer and the First Officer…

Cruise Director Beverley is having trouble keeping the entertainment team in line, but their onboard bickering is as nothing to what happens ashore when the ship docks in balmy Barcelona.

A murderer strikes in the shadow of the majestic Sagrada Familia cathedral, but who has the skills to kill in this very particular way – and what is their motive?

Crooner Jack and First Officer Kate uncover a mystery of concealed identities that stretches back to the assassination of a Russian oligarch.

Finally, at a moving musical tribute to a fallen friend, are Jack and Kate also saying goodbye to their chance of happiness together?

The luxury liner sails to Sicily and a family saga unfolds. Successful businessman Roberto is terminally ill and is returning to his homeland with his three children and his new wife, Freya, who he wants to take over the business when the time comes. When death duly strikes in the heat of the Sicilian sun, Jack and First Officer Kate must penetrate a devious web of secrets to unmask the killer.

Murder is on the cards as the luxury ship hosts a high stakes poker tournament while cruising to the Bay of Biscay.

Top player Nikolai Volkov lords it over his competitors, who all have reasons to want to teach the arrogant maestro a lesson. When simmering resentments turn deadly, Kate and Jack have no shortage of suspects, and must unravel a case which may turn out to involve more than one murderer.

Meanwhile, the mismatched pair of sleuths exchange home truths when a job offer means their partnership could be on borrowed time.

When First Officer Kate's schoolfriend Cecile unexpectedly joins the ship for her lavish wedding, Kate and Jack are both swept up in the hen and stag dos.

But in Palma a dramatic kidnap and ransom demand shatter the party mood.

Jack re-lives old times with local detective Luciana Perez as the mystery deepens and hidden motives are revealed.

Will Cecile and her beau get their happy ever after? And how will Kate react when she receives a proposal of her own?

Another port, another killer...

When the ship docks at his friend and crewmate Jamil's hometown of Casablanca, singer Jack volunteers to moonlight as a tour guide and invites himself for dinner with Jamil's family.

But the sun-drenched alleys and markets hide sinister secrets, and soon a charity helping street kids is mired in scandal and a murder has been committed.

First Office Kate is under pressure to leave the sleuthing to the professionals and concentrate on her career, but when there's a mystery to be solved and a killer to be brought to justice, some things are more important than obeying Captain's orders…

When the world's number one crime writer joins the luxury ship as a star passenger, it isn't long before Death gets on board as well.

In the beautiful city of Lisbon, the author's husband dies in circumstances eerily similar to events in her own book.

With super-fans and bitter rivals in the mix, it's up to singer Jack and First Officer Kate to unravel the murderer's identity before the body count rises still further...

Cruise singer Jack and First Officer Kate team up to solve a murder in La Rochelle.