The Dead in their Vaulted Arches / Alan Bradley / 310 pages

Once you have read a Flavia de Luce novel, you are a Flavia de Luce fan through and through forever.  In this addition to the series, the precocious Flavia must deal with the return and burial of her mother's body which has been recovered from the ice years after she died.  In her usual style, Flavia uncovers the truth about her mother's death and discovers a secret about her family that effects her future.  The mixture of science, family, history, and secrets will keep you up turning the pages until you can't keep your eyes open.