David Pepin has loved his wife since the moment they met, and after thirteen years of marriage he still can't imagine living without her--yet he obsessively contemplates her demise. Soon she is dead, and he's both deeply distraught and the prime suspect.The officers investigating her death are intimately familiar with conjugal enigmas. One fell in love with his elegant socialite wife when they solved a murder committed right across their courtyard, but they're now as estranged as the couple whose misery they surveilled all those years ago. Another was happily, complacently married until his wife became inexplicably, voluntarily, and militantly bedridden. And Detective Sam Sheppard is especially sensitive to marital guilt, having decades before been convicted and then declared innocent of his wife's brutal murder.When Pepin is linked to a hit man, the ambiguity enfolding this case begins to resemble the Escher drawings that inspire the computer games he...