Unknown - Liam Neeson, January Jones, Aidan Quinn, Diane Kruger

Liam Neeson as Dr. Martin Harris
January Jones as Liz - Wife of Dr. Martin Harris
Aidan Quinn
Diane Kruger

Dr. Martin Harris is in Berlin for Biotechnology summit together with his wife. While checking-in at Hotel Adlon Kempinski he found out that one of his baggages was left at the airport, hurriedly he boarded a taxi without letting his wife know where he is going, unfortunately a car accident happened involving the taxi he rode and he have been in comma for four days. When he returns to Hotel Adlon, he was surprised that his wife no longer knows him and is with another man who also identified himself as Dr. Martin.