Honolulu Cold Homicide by R. Barri Flowers

His latest case is a link to the past and a cold case that’s all too personal...

When a new case carries echoes of his sister’s cold case murder, Detective Sergeant Lance Warner is visited by another ghost from the past. Caroline Yashima isn’t only the CJD specialist assigned to work alongside him, she’s also the ex he regrets walking away from. He’s not sure if he can expect a second chance — or just a chance for closure. But when Caroline becomes a target, he knows that he doesn’t want to live without her.