Frank is Sarah Breaker's father. He allegedly worked in New York City as a police officer a long time ago. Sarah mentioned she used to say he was just like Alex Casey. Once when he heard Sarah say a nasty rhyme about Cynthia Weaver, he furiously told her that Weaver pays attention, tries to tell people what she knows and it's not her fault no one listens. He may have been aware of the Taken as he often had coffee with Weaver at the Oh Deer Diner. He's one of the people on the list for Barry to call with the "Night Springs" message.
It has been said that Frank returned to New York were he had worked for several years as a police officer for the NYPD. Frank never thought he would see his daughter become the Sheriff of Bright Falls, this was something he did not want to happen as he wanted her to do more. Frank's daughter, Sarah, got fed up with the "busy life of New York" so she applied for the post of Sheriff. At the time, there was speculation that her father my have applied for the Sheriff position and was favored over his daughter. This may be the reason he has returned to New York.