With 2013’s Maya’s Notebook, Allende departed for somewhat darker territory, also shifting her focus to an adolescent heroine. That book may have surprised fans, but it was still a No. 1 San Francisco Chronicle best seller and made the New York Times and Boston Globe lists as well. Here she continues in the same vein. Amanda Jackson doesn’t so much identify with her mother, good-hearted holistic healer Indiana, as with her father, who’s divorced from her mother and serves as the SFPD’s deputy chief of Homicide. A fan of crime fiction and the online mystery game Ripper, MIT-bound Amanda indulges in a little investigating of her own when murder starts breaking out all over town. Then her mother disappears.