'When Calls the Heart' Sneak Peek: Abigail Gives In to Her Attraction to Frank

Credit: Copyright 2016 Crown Media United States, LLC/Photographer: Eike Schroterr

Abigail (Lori Loughlin) decides to cast her concern aside and give in to her deepening attraction to Frank (Mark Humphrey), while the whole town becomes a target for Jake Garrison (Chris William Martin) and his violent gang on this week's new episode of When Calls the Heart, airing Sunday, March 6 at 9 p.m. ET/PT on Hallmark.

Meanwhile, Bill (Jack Wagner) grows overprotective of Abigail's safety, and Jack (Daniel Lissing) refuses to let the people of Hope Valley give in to their fear, leading to a dramatic conclusion that will see an unlikely ally willing to stand and fight-and the strength of this small town tested.

Elsewhere, Elizabeth (Erin Krakow) and Jack's relationship is touched by jealousy when a woman from Jack's past unexpectedly arrives in Hope Valley,

Watch a sneak peek below: