In an upcoming episode of Once Upon A Time, our newly reunited, but separated Charming family will find a way to communicate in-between worlds. However, like most things in the magical world it will come with a price and 'great risk'.
"They find a direct line of communication that requires a great risk," Ginnifer Goodwin says. "There's something very tragic about the fact that the risk that's taken is potentially a great sacrifice that is made in order to get Emma and Snow White home. There's something really beautiful about the selflessness that is necessary to communicate."
Source: TV Guide