DeLuca has a seemingly incurable patient and turns to a diagnostics genius for help; Bailey checks in on Joey, a foster kid that Ben brought into Grey Sloan; Amelia is getting the results of her paternity test.
Cast: Ellen Pompeo, Chandra Wilson, James Pickens Jr., Kevin McKidd, Jesse Williams, Caterina Scorsone, Camilla Luddington, Kelly McCreary, Giacomo Gianniotti, Kim Raver, Greg Germann, Jake Borelli, Chris Carmack, Jason George, Lindy Booth