Maura Tierney jumps to second place in the opening credits from this episode after Noah Wyle. Laura Innes takes on the 'And' final opening credit recently vacated by Paul McCrane.
Gallant's sister Val tells Greg Pratt she has MS but in episode 16 of season 8 ( secrets and lies) Gallant tells Carter his twin sister was born with cerebral palsy.
The two runaway teen patients say they are from Arcola, which is a town of 2,900 about 160 miles south of Chicago. Arcola is the home of Johnny Gruelle, who created the "Raggedy Ann" and "Raggedy Andy" characters and dolls. Since 1980, Arcola has also hosted a "Precision Lawn Mower Drill Team" and annual event with the "Lawn Rangers", a group who wear cowboy hats, carry brooms, and ride lawn mowers in precision movements.