The Irish countryside seems like the perfect refuge for Cal Hooper, a retired Chicago cop who’s still raking over the ashes of his failed marriage. But storm clouds threaten to take over. Trey, a taciturn teen, worries there’s something sinister behind his older brother Brendan’s disappearance. Soon Cal is knee-deep in the Irish bog and in the mystery. French’s writing is in fine form here but those expecting a fast-paced Dublin Squad-style thriller will be disappointed. The denouement too is more of a whimper than a punch, which is probably just as well, in keeping with the setting’s languid atmosphere.