Lenne Klingaman

Things get personal for Dr. Halstead (Nick Gehlfuss) when his unsupportive father (guest star Louis Herthum) is admitted to the hospital against his wishes. When treating Will's father, Dr. Rhodes (Colin Donnell) reflects on his relationship with his dad. Dr. Charles (Oliver Platt) gets involved when his daughter Robin's (Mekia Cox) strange behavior continues to intensify and Dr. Choi (Brian Tee) struggles to help a teenage boy who is desperate to control his sexual urges. Dr. Manning (Torrey Devitto) feels the impact of being a working mother when a young boy is brought in for neglect. Meanwhile, Sarah (Rachel DiPillo) teaches a group of high school students about the responsibilities of having a child by using fake baby dolls. S.Epatha Merkerson, Marlyne Barrett and Yaya DaCosta also star. Jesse Lee Soffer, Jeff Hephner and Patti Murin also guest star.

The team welcomes a new member as they begin their hunt for a repeat offender and the child he kidnapped after murdering the boy's single mother. Also, Jess tries to move past the awkward exchange he had with Sarah during their last encounter, on FBI: MOST WANTED.

Lilly and her team set out to find a 1962 suicide victim's killer after the woman's granddaughter provides evidence that the suicide note was not written in her grandmother's handwriting.