In San Francisco in 1965, eighteen-year-old Blake Estancia searches the city for magical relics tied to her family's curse, reclaiming her dormant abilities along the way and barely managing to keep a step ahead of a murderous secret society.

Henry, Anna, and Jose, the junior members of the Silver Jaguar Society, are on a mission in Paris to recover the Mona Lisa--but when senior members of the Society are taken hostage, it is up to Henry to rescue them while continuing to pursue the missing masterpiece.

From London, through the Austrian Alps, and to central China, Jack, Gwen, and new friend Liu Fai face a clockwork dragon as they try to prevent Gall from finding ancient artifacts said to grant immortality.

Will gets involved with The Order, a group consisting of ghost-talkers like himself, as he continues to help spirits into the light, while Alona, his vain, self-centered, and cranky spirit guide begins to learn the value of helping others.

Christopher Rowe is shipwrecked in Devonshire, where children are disappearing and a ghost is suspected, but even Tom and Sally's arrival may not cure his amnesia in time to help.

When the students at Rosewood Hall are targeted by members of a secret society, Lottie Pumpkin and Ellie Wolf must find the culprit before the school is forced to close its doors.

Cassidy Blake and her ghostly friend, Jacob, have survived the ghosts of Edinburgh and Paris, but New Orleans is a haunted city in a class by itself, and that is the current stop for her parents' TV show; but there is something a lot scarier than ghosts here: the Emissary of Death is after Cassidy, and to defeat it she will need the help of the Society of the Black Cat and she will also be faced with a terrible choice--lose one of her two friends,...

Jack Buckles, a thirteenth-generation tracker whose senses are on the fritz, and Gwen Kincaid, a clerk hoping to become an apprentice quartermaster, are framed for stealing a legendary jewel--one of a set of rubies thought to bring the owner loyalty, knowledge, and power--and they must locate the remaining rubies before the thief does or risk his unleashing a reign of terror worse than Genghis Khan's.

In 1666, after four months away, friends Christopher Rowe, Tom, and Sally return to London triumphantly but, guided by coded riddles, face a conspiracy that threatens Christopher, as well as the king himself.

When Hazel becomes the personal physician to Princess Charlotte, the sickly granddaughter of King George III, she is dragged into the glamor and romance of the British court, but she soon realizes malicious forces are at work in the monarchy, and she may be the only one capable of setting things right.