Segment of One

Marketing analyst Nick Vanderoff, newly retired from his successful career in business, lost his wife last year to cancer. Now he just wants to rest, relax, and repair family relationships. To accomplish this, he's been spending time with his math-genius granddaughter, Holly, and his estranged daughter.

But a serial killer is on the loose in Dallas, and traditional forensics have produced nothing. Nick has consulted for the police department before, but not on anything like this. Can he tru...