Regina casts a spell in hope of finding out why Zelena was abandoned; Belle discovers what Zelena's ultimate goal is.
New suspects make the list as the detectives learn that Danny had some secrets of his own. Meanwhile, Detective Carver is also keeping things hidden that could affect his ability to finish the case.
Walter is forced to revisit his painful past when a fringe event causes people to spontaneously combust; the team faces off with David Robert Jones.