"Iris and Vivi work to uncover their dark, dangerous, and possibly magical past when their older sister Grey goes missing"--

"Cat sets out to discover what happened to her childhood friend when she discovers that he's been missing for months"--

When Henry's magic teacher, The Amazing Arthur, goes missing right before the Greenfield Magic Shop's annual magic show, Henry and his sibilings look into Arthur's disappearance.

Mira receives a postcard from her missing mother from Paris and she and her father travel to France to search for her, but while visiting Notre Dame, Mira touches a gargoyle and is whirled into the past, where she meets the famous painter Degas and catches a brief, shocking glimpse of her mother.

Maddie loves spending summers at Havenfall, a Colorado inn where her uncle brokers peace between worlds, until a murder forces her to take on responsibilities for which she is unprepared.

Told in two voices, a seventeen-year-old battered and bruised girl struggles to remember who she or the man claiming to be her father is while seventeen-year-old Drew stops at nothing to find his missing girlfriend.

Sixteen-year-old Malencia (Cia) Vale is chosen to participate in The Testing to attend the University; however, Cia is fearful when she figures out her friends who do not pass The Testing are disappearing.

"When Enola Holmes, sister to the detective Sherlock Holmes, discovers her mother has disappeared, she quickly embarks on a journey to London in search of her. But nothing can prepare her for what awaits. Because when she arrives, she finds herself involved in the kidnapping of a young marquess, fleeing murderous villains, and trying to elude her shrewd older brothers-all while attempting to piece together clues to her mother's strange disappearance....

Border collie Skye, a trained therapy dog now learning search and rescue in a national park in California, has her first opportunity to help when a sixteen-year-old boy goes missing. Includes information about border collies and working dogs.

A girl's quest to find her father leads her to an extended family of magical fighting booksellers who police the mythical Old World of England when it intrudes on the modern world.