Unusual Suspects

In Springfield, Ill., an infant girl is found in a sweltering sports utility vehicle, leading to the discovery that the baby's young mother has gone missing; a frantic search leads to an eerie sight at the edge of town.

In Southern California, police investigate the murders of married entrepreneurs who may have found out the hard way that no amount of money is worth losing one's life over.

A fun-loving New Jersey woman buys a home close to her family, then the wrong houseguest proves deadly, and police must dig through the victim's life to find an enemy who hides very close.

In Summit Township, Mich., a mother is gunned down in her home in the middle of the night; suspicion swirls around those closest to her until it is revealed that being in the wrong place at the wrong time can result in paying the ultimate price.

In Costa Mesa, Calif., the murder of a young girl and the disappearance of a former U.S. Army solider lead investigators down a dark path as they delve into the mind of an unassuming killer.

A recent law school graduate goes missing weeks before the bar exam; family, friends and investigators collaborate to solve the mystery of her disappearance; a revelation puts her inner circle of friends under suspicion.