Dragons in Areth each have a single predestined rider and life mission, given to them by the Oracle. Kira and her dusk dragon, Longfang, must find the third orb to save the Oracle, leader of all dragonkind. Following a path beset with dangers and traps, the four dragonriders must reach the twilight world of the Castle of Shadows. Kira knows enough to be anxious. What twisted sacrifice will thisorb demand?

Four dragonriders on a mission to save their world. Elian and his dawn dragon, Aurora, lead the search for the fourth and final orb. Pursued by night dragons and helped by a WWI airman, the four dragonriders are drawn into a huge aerial battle between all the dragon enclaves. The ultimate fate of dragonkind hangs by a thread. To restore order, a terrible price must be paid ...

Declared outlaws by the Emperor, the Guild of Assassins strikes back hard. The Emperor must act fast. He needs someone to infiltrate the Guild. All attempts to locate the assassins' headquarters have failed and Femke is already known to the assassins. So Reynik, the young legionnaire, must penetrate their inner circle to discover the Guild's secrets. But secrets kept hidden for over five centuries command a high price is Reynik is ready to risk his life for the mission?

The Bermuda Trianglehas cast a shadow over Sam and Niamh Cutlers' lives since their mother vanished nine years ago. Her whereabouts remains a mystery and every year they return to the Florida Keys with their father, Matt, who is obsessed with solving the haunting puzzle. But Sam is bored with lazing around by the pool while his father hunts for the truth. Craving excitement, he and his friend, Callum, "borrow" Matt's boat. At first it's great fun, but when they find themselves marooned in a terrifying land, the boys realise they too have fallen victim to the Triangle's mysterious effects. Can they find a way home, or will they be lost forever?

When Femke is entrusted with a vital foreign mission for the Emperor, the resourceful young spy assumes it will be a straightforward task. But nothing is simple when your enemies are one step ahead of you. Framed for two murders while visiting the neighbouring King's court, Femke finds herself isolated in a hostile country. As the authorities hunt her down for the murders, her arch-enemy, Shalidar, is closing in for his revenge . . .

Sam and Callum are still stranded in the parallel world, having been pulled across by the dangerous energy of the Bermuda Triangle. Now they've found Sam's mum they are desperate to find a way home... at any cost. Meanwhile Niamh is convinced that her brother is alive and not dead as the authorities suspect, but she needs to find out what really happened to the boys before her father is convicted of their murder.

When Emperor Surabar is assassinated, Shalidar makes plans to put Lord Tremarle on the throne, in return for being appointed his heir. The remaining lords have other plans, however, and the city descends into anarchy. Femke and Reynik go into hiding with the Emperor designate, Lord Kempten. But for Kempten to take over, he must destroy the master stone - a stone which is kept in the heavily-guarded palace. As gladiators face up to assassins, can Femke come up with a plan to get them into the palace - and return peace to the city?