Beth Hart is alive and well and hunting for her killer. When the sheriff dismisses the deaths of her brother-in-law Chris and her twin sister Ellie as accidents, Beth impulsively switches identities with Ellie to lure the murderer into revealing himself. Beth can't rest until she finds the killer, and neither can her sister's ghost, who haunts Beth's dreams. FBI fraud investigator Jason Blackforth fell hard for Beth at Chris and Ellie's wedding, but he left her as quickly as he found her--undercover work and relationships don't mix. Now, grieving and believing Beth is dead, Jason is appalled to find himself fantasizing about the widow of his best friend. He wants to help her through this difficult time, but she reminds him so much of Beth. And the more time he spends with her, the more convinced he becomes that something just doesn't add up. Then he learns the truth, and Jason must accept the unbelievable before they both end up dead.