Switched identity episodes are always fun. It's a laugh to see young Jodi Foster in the original Freaky Friday, or older Jamie Curtis in the remake. Willow assumed another identity in Buffy. I dream of seeing the body swap happen to Sam and Dean on Supernatural. Over in Smallville they're recycling the plot for a second time in a row. Emenem parlayed it into a hit with The Real Slim Shady. Hardees is even doing it with the Bistro burger in their commercials.
So the premise for Identity looks interesting.