For Chris Honeysett, artist and private investigator, autumn threatens to bring down more than just the roof of his studio. A stormy October in the City of Bath forms the backdrop to Aqua Investigation's strangest case yet. When Chris downs brushes to take on what looks like a simple surveillance job he soon finds himself in a frightening world of murder, abduction and blackmail.Dark times often require extraordinary solutions, why else would Honeysett suddenly find himself on the wrong side of the law? Unexpected cracks are beginning to show in his private life too, just when the triangle that is Chris, Tim and Annis should be working together to keep them all out of jail. In Rainstone Fall first impressions count for nothing and all appearances are deceptive.