NBC | 10:00 pm
With the wildfire in the past, it’s on to the next crisis for the medics in the new episode "Off the Rails." They deal with an influx of patients resulting from a major mishap at an amusement park, putting Scott and Cain (Scott Wolf, recurring guest star Mark Consuelos) to particularly big tests. Back overseas, TC (Eoin Macken) continues to treat his captor while trying to determine where Syd (Jennifer Beals) is. Jill Flint and Brendan Fehr also star.