Dead Mand and the Army of Frogs is slated to come out on August 5, 2014. It follows the adventures of Denton (aka Dead Man) and Bran in Chicago as they face down spirits of all kinds. More
I'm in the process of wrapping up edits of Secrets and Charms. The book is set in the same world as Secrets and Ink. It's more spin-off than a sequel. The protagonists are Olly—Jem's friend from the previous book—and a troublesome redhead Olly keeps butting heads with. The book will come out in December, right before Christmas.