Chicago Fire

NBC | 9:00 pm

A mysterious yet clearly desperate caller who is in grave peril relies on Kidd (Miranda Mayo) to rescue her and her brother in a new episode called "Don't Hang Up." Meanwhile, the firehouse team helps Cruz (Joe Minoso) prepare himself for fatherhood. Jesse Spencer, Taylor Kinney, Eamonn Walker, David Eigenberg and Christian Stolte also star.