Sipowicz and Simone probe the stabbing death of a Chinese girl; Martinez partners with Lesniak for a robbery case; Medavoy leaves his wife again.
A building super leads detectives to a robber/rapist, but the witness's bravery has a price; a hijacker takes a city bus.
The squad tracks down a Russian mail-order bride's killer and investigates a drive-by shooting involving a city bus.
Kirkendall's son witnesses a stabbing in a convenience store. Sorenson and Russell join forces to try and protect him from getting caught up in the system.
Sipowicz meets Clark at the scene of a homicide and tells him that his meeting with Frank gave him no useful information that would help in his and McDowell's defence for Michelle's custody.