Board Thread:Spoilers!/@comment-2153169-20180110171410/@comment-34998786-20180326204046

Titled “Breadcrumbs,” the 149th episode “is an epic adventure on the high seas with Henry and Hook as they venture into stormy waters more dangerous than they could possibly imagine,” executive producers Adam Horowitz and Edward Kitsis tease.

I guess they are after Blackbeard, and "breadcrumbs" means hints for a detective action, so that they did in the past what Henry and Rogers are trying to do in the present: working together to find the killer and protecting Alice. Maybe Blackbeard has a coursed persona in Seattle too. Or he has something useful or is aware of something.