The final battle is looming - and with it, a darkness more powerful and more deadly than anything they've faced before. To end this nightmare, they'll need everyone - the full party - standing together, one last time.

Percy and Annabeth must confront their flaws at a resort sanctuary.

Lucy is captured by Caesar's Legion who execute the woman, a Legion slave, she was escorting. Lucy learns that after Caesar's death, the Legion splintered into two opposing factions due to a succession crisis. Despite attempting to offer her services in conflict resolution, she is crucified.

Palm Beach society arrives in Switzerland with sights set on the Dellacorte generation-skipping trust.

When the mission to capture their enemy in Paris goes sideways, Alexander surprises The Orphanage by going off-book and following his own mission plan; this time, it could cost him everything.

After escaping another trap, Sang-ung realizes his regular life is taking a negative impact. But Anna comes forward with an unexpected proposal.

Ki-tae begins working on an operation as Geon-young digs into the KCIA's activities. Geum-ji returns with her son but refuses to reveal the father.

Ki-tae meets Yu-ji of the Ikeda clan in a push to scale up operations, and the pair agree to work together. Meanwhile, Geon-young follows them to Japan.

Martin and Vicki try to finalise a long-term national distribution deal that will take Tansform to the next level, Susi attempts to change careers, Terry struggles to get clean, and Mony jumps into a new business.

Grieving her fianc?'s murder, Lillian tracks down the recipient of his heart.

Pine's past resurfaces after a chance sighting. He's pulled into a deadly conspiracy reaching from Colombia's jungles to the heart of MI6.

Claudia Winkleman invites a brand new group of people to the Scottish Highlands to play the ultimate game of detection, backstabbing and trust.

As the murder of a diplomatic courier leads DS Hana Li to London's US Embassy, MI5's Madeline Delaney receives a call about a bomb on the jet she is travelling on.