perfidy ˈpəːfɪdi/ nounliterary the state of being deceitful and untrustworthy. Mairead is called in the middle of the night when her Fiancé Ethan has gotten into an accident. Nobody knows what happened and Ethan is held into a coma because of his injuries. Mairead wants to know what happened. But when she investigates it she starts to wonder if she even wants to know what truly happened and who she is engaged to.