My Dead Lover Came Back Before the WeddingEpisode 3

Two years ago, billionaire Callum Maddox watched Emery Thorne die in his arms. Everyone called it cardiac arrest. Then Aurelia Wynter arrives with no past, no memory, only Emery's green eyes. But he is engaged to Delilah, who stayed through his grief. DNA proves Aurelia is not Emery. Yet records show both hearts stopped the same minute. If not Emery, why does she remember Emery's life? As the truth returns, will the killer let her live twice?