Danny and Baez investigate when an expectant mother is a victim of a “knockout game,” in which teenagers punch unsuspecting civilians in the head. Meanwhile, Frank wrestles with promoting an officer when he thinks it can be viewed as favoritism.

Abigail Hawk, Andrew Terraciano, Gregory Jbara, John Behlmann, John Ventimiglia, Josh Segarra, Julito McCullum, Kevin Hogan, Peter Herman, Richard Brevard, Robert Clohessy, Rose Hemingway, Shannon Michael Wamser, Sharrieff Pugh, Tony Terraciano, Victor Slezak