She spent one reckless night with a stranger. Unfortunately, the stranger turned out to be the billionaire she was about to investigate for murder.Ella Whitmore has rules.Never mix business with pleasure. Never trust rich men with expensive watches and suspiciously perfect smiles. And definitely never spend the night with a stranger.She breaks all three in one evening.By morning, Ella is determined to forget the ridiculously attractive man who left her wondering whether one-night stands are actually worth the trouble.Then she walks into a murder investigation and finds him sitting across from her.Elias Park. Billionaire. Suspect. Her unforgettable stranger."Are you always this difficult?" he asks."Only with murder suspects."Their problem gets worse when hotel records expose their secret night together-and someone leaks photographs of them to the press.Ella is removed from Elias's case.Elias needs her.Ella needs a husband.So she makes him an offer neither of them should accept.Six months. One fake marriage. One murder to solve.She'll help prove he's innocent. He'll pretend to be the husband her family desperately wants.Simple.Except investigating a murder together means getting dangerously close. Pretending to be married means convincing everyone-including themselves. And every time Elias looks at her like that, Ella starts questioning whether their chemistry is part of the investigation... or evidence of something much more dangerous.