When it comes to solving a crime... time is the enemy. Tonight, the story of a murder that - after seven years - might never have been solved.

An adopted child sold in an infamous black market baby ring tracks down her birth mother and finds a whole new family. Then, a dusty old painting is revealed to be a centuries-old lost treasure -- an original Michelangelo valued at $300 million.

Richard Garber thinks he has gotten away with murder, after he bludgeons a neighbor to death. But when he becomes the lead suspect in the case, Garber hits the road spending 8 months dodging the Feds and sneaking cash from his girlfriend.

Colleen provides armed cover for U.S. Marshals; Mandy responds to a complaint about a belligerent loiterer; Rose surprises a man as he tries to leave the scene of a break-in; and Tia races to the scene when a woman is allegedly stabbed in the neck.

Mandy arrests a mother on suspicion of child endangerment; Rose nabs a man wanted on a felony warrant; Colleen busts a 19-year-old girl on charges of soliciting during an elaborate prostitution sting; and Tia finds an elderly man dead in his apartment.

A suspected drunk driver gets a rude awakening when Mandy finds him passed out; Tia races into action when a child calls to report a shooting; Colleen's patience is tested when she nabs a prostitute; Rose helps a fast food clerk who feels threatened.