Detectives Selles Morris, Laura Skrip and Jim Corcoran team up to search for a straight "A" college student. They uncover surveillance footage that shows the 19-year-old sophomore walking toward the lakefront, then disappearing. Their around-the-clock search comes to a shocking conclusion. Then, Detectives Morris and Skrip pull double duty: Morris hunts down an alleged gang member who vanished after a drug deal goes bad, putting his own family in danger. Skrip has just minutes to save the life of a woman who threatens to jump from a bridge.

• Bill Mondy