Cape Refuge, by Terri Blackstock

Cape Refuge is about a coastal island community that is hit hard by a double murder. The victims were upstanding members of the community who ran an organization called The Hanover House. The Hanover House takes in people who need help, including inmates recently out of prison who have dedicated their lives to Christ. The daughters of the victims, Morgan and Blair, struggle to survive the ordeal, especially when Morgan's husband is arrested for her parents' murders. Sadie, a runaway teen, shows up in the middle of the crisis, and the island police must race to find the killer... before he strikes again.