This is based on Season 7 to come. Under great stress Emma, on entering Storybrook and in the confruntation with Lilith, could access magic. Think how much Billy has suffered and how much he has lost. So, if he escapes Baragan's ambush in the lift and fails in his citizens arrest, he will have to run as far as he can, with Costelo's cash, to escape Sullivan and the corrupt Fed's.
Crossover - Departed & Once Upon a Time - Rated: K - English - Crime/Fantasy - Chapters: 5 - Words: 3,368 - Updated: 9/14/2017 - Published: 9/12/2017 - Billy C., Colin S., Henry Mills, Regina M./The Evil Queen