The much-anticipated final volume of Rob Davis’s dark and inventive trilogy  The Motherless Ovenand The Can Opener’s Daughtermay have raised more questions than they answered, but The Book of Forks explains everything.  Castro Smith finds himself imprisoned within the mysterious Power Station, writing his Book of Forks while navigating baffling daily meetings with Poly, a troubled young woman who may be his teacher, his doctor, his prison guard . . . or something else entirel