MAGPIE MURDERS, by Anthony Horowitz. The author of new Sherlock Holmes mysteries for adults (“The House of Silk,” etc.) and the YA Alex Rider series, here pays homage to Agatha Christie and her classic whodunits. “Magpie Murders” is the title of the novel within this novel — all but completed when author Alan Conway dies. But as Conway’s agent tries to figure out the denouement, she realizes that the characters in his novel have suspicious real-world parallels. Could his death be a murder? (Harper, $27.99)

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OPENING WEDNESDAY AT A THEATER OR DRIVE-IN NEAR YOU: The Shadow Cinema of the American ’70s, by Charles Taylor. Film critic Taylor revisits the B movies of the 1970s and makes a passionate case for their “grungy, visceral appeal.” Among his favorites: the blaxploitation flicks “Foxy Brown and “Coffy” with Pam Grier, Sam Peckinpah’s critical bomb “Bring Me the Head of Alfredo Garcia” and the “sleazy urban chic” of “Eyes of Laura Mars” with Faye Dunaway. (Bloomsbury, $27)

PERENNIALS, by Mandy Berman. This debut novel takes readers to Camp Marigold in the Berkshires where BFFs Rachel Rivkin and Fiona Larkin spent their childhood summers, then as college students return in the summer of 2006 to work as counselors. With a large cast — among them one of the few black campers, counselors who’ve come from Israel and the United Kingdom, the divorced camp director — Berman builds to a tragic event at season’s end. (Random House, $27)