Chain of Evidence

Detective Joe "Dart" Dartelli made one critical mistake in his police career: He chose to ignore a piece of evidence in a case labeled a suicide that might have been a murder. The dead man was himself a vicious woman-killer who more than deserved his fate, but that ignored evidence pointed to Dart's former mentor, the brilliant forensic specialist Walter Zeller. Now another suicide victim turns up- the body of a wife-beater- and the evidence clearly shows that the death was self-inflicted or does it? Zeller was the best at reading and understanding the forensics of a crime scene- could he have manipulated it? Worse, why has Zeller disappeared?