Cameron And Lisa Murdoch Are Successful Crime-Writers. They Have Been On The Promotional Circuit, Joking That No-One Knows How To Get Away With Crime Like They Do. After All, They Write About It For A Living.So When Their 7 Year Old Son Zach Goes Missing, Naturally The Police And The Public Wonder If They Have Finally Decided To Prove What They Have Been Saying All This Time – Are They Trying To Show How They Can Commit The Perfect Crime?