After moving to a new town with her mother, Emily the Strange finds her troubles multiplying when she accidentally duplicates herself.

Time is a funny thing in the hospital. In the mental ward. You lose track of it easily. After six months in the Maryland Mental Health Unit, Kyra Sellers, a.k.a. Goth Girl, is going home. Unfortunately, she’s about to find out that while she was away, she lost track of more than time.
Kyra is back in black, feeling good, and ready to make up with the only person who’s ever appreciated her for who she really is.

But

...

Goth girl Thorn and her family move to Nevada where Thorn meets a mysterious masked young man and follows psychic vibrations from a locket to a shocking, long-buried secret.

Emily the Strange has lost her memory and finds herself in the town of Blackrock with nothing more than her diary, her slingshot, and the clothes on her back.

Preparations for the Ghastly-Gorm Garden Party and bake-off are under way. Celebrity cooks are arriving at the hall for the big event and, true to form, Maltravers, the indoor gamekeeper, is acting suspiciously. Elsewhere at Ghastly-Gorm Ada's wardrobe-dwelling lady's maid Marylebone the bear has received a marriage proposal. Ada vows to aid the course of true love and find out what Maltravers is up to, but amidst all this activity, everyone, including...

When Cody's Goth cousin Turk moves into his house, enrolls at Vlad Dracul, and decides to turn an abandoned nineteenth-century mill into an art center, the vampire (Jenti) students are not pleased, and Cody's hopes for a great sophomore year are blighted.