Book Three of the Drey Entanglement! Previously 'One Night: Two Books.' I've always been curious. About my old house, I mean. You know, how my mother's dead, my father left... How has it changed? Well, it has. A lot. Amelia Drey, Alan's younger brother, has grown up with her mother and with another, richer father. She doesn't remember her first father. But since her mother 'died,' her father hasn't been the same. They moved away from the huge mansion only her father could afford, ending up in a smaller one that just isn't the same. But when her father goes to a party at her first home, someone needs to take care of Amelia's little sister- Anna. And so she comes. She loses Anna. And everything goes awry. As Amelia Drey searches for her sister and her mother's memories seep into her head, only she can stop the pulses of the past. For she is the Catalyst. She shouldn't have come.