My review may be tainted by a growing weariness with novels that rely on creating suspense and tension by keeping dialogue and descriptions vague.  At least Rader-Day keeps the reader interested with other elements such as the main character’s capacity for analyzing handwriting and a slow-burning romantic development.  The tone is more tense and anxiety-ridden than thrilling and the pacing is moderate.  Sound plotting and a believable-enough resolution help set this one apart from the rest.