Theseus' Ship

S2, E13: Dr. Rhodes (Colin Donnell) convinces Dr. Latham (guest star Ato Essandoh) to join him for a medical trip out of town, which puts Latham's personality issues to the test. Dr. Manning (Torrey DeVitto) treats an 8 year-old cancer patient who wants to give up on his battle until she makes a surprise discovery. Elsewhere, an unhealthy woman with heart problems is brought in and doesn't want to listen to doctors, much to the dismay of Dr. Halstead (Nick Gehlfuss). Meanwhile, Dr. Choi (Brian Tee), Dr. Charles (Oliver Platt) and Dr. Reese (Rachel DiPillo) work on a complicated case involving a woman with a personality disorder. Will and Nina (guest star Patti Murin) work through their first relationship test. S. Epatha Merkerson, Marlyne Barrett and Yaya DaCosta also star.