Six Months of September: A Duncan Walsh Mystery

"The second story on the ten o'clock news on Wednesday: Student missing, police inquiring. The interview with the professor was followed by a quick hit with a grumpy detective in a wrinkled suit tossing out the inevitable quote that the first forty-eight hours are the most vital in a case. He didn't mention the fact that twice that time had passed."

One woman's disappearance unlocks dark secrets in Mark Allen's brisk new detective novel, Six Months of September. As the suspects pile up, it...