Northern Lights — Nora Roberts

Lunacy was Nate Burke's last chance. As a Baltimore cop, he'd watched his partner die on the street--and the guilt still haunts him. With nowhere else to go, he accepts the job as chief of police in this tiny, remote Alaskan town, where the peace provides a balm for his shattered soul--and an unexpected affair with pilot Meg Galloway warms his nights....

But other things in Lunacy are heating up. Nate suspects the killer in an unsolved murder still walks the snowy streets. His investigation will unearth the secrets and suspicions that lurk beneath the placid surface, as well as bring out the big-city survival instincts that made him a cop in the first place. And his discovery will threaten the new life--and the new love--that he has finally found for himself.