Alexandra Grey

When the case against a popular sports star falls through, Benson digs into the suspect's past to uncover additional victims. Velasco is disappointed when he meets one of his heroes.

Cookie continues to keep her secret from her sisters, but Lucious feels she needs to come clean in order to move forward. When Treasure is unable to perform at the upcoming showcase, Becky suggests that Yana take the spot, but Lucious feels she’s not ready. Meanwhile, Giselle struggles with keeping her family secret from Julian and Maya sets her sights on her own recording deal.

Dr. Manning (Torrey DeVitto) and fourth-year medical student Jeff Clarke (guest star Jeff Hephner) are forced to figure out a mystery illness when an Indonesian man who doesn't speak English arrives at the hospital in dire straights. Maggie (Marlyne Barrett) takes Dr. Halstead (Nick Gehlfuss) to her family reunion where he meets her sibling Denise (guest star Alexandra Grey) and uncovers deep-rooted family secrets. Meanwhile, Dr. Rhodes (Colin Donnell) takes on a complicated heart surgery without consulting Dr. Latham (guest star Ato Essandoh) and Dr. Reese (Rachel DiPillo) and Dr. Charles (Oliver Platt) encounter a woman experiencing an unusual pregnancy.

Caroline has news to share, forcing Dr. Charles to make a serious decision about their relationship. Maggie meets her sister’s new boyfriend, but discovers danger may lie ahead. Dr. Rhodes experiences a devastating loss while Dr. Choi and April are faced with an unexpected challenge that strengthens their relationship.

When Mac and Riley go missing and wake up 24 hours later in a corn field with no memory of how they got there, they must unravel the mystery to find who took them, and how to get rid of the nanotrackers in their bodies, no matter the cost.