Did anybody else think that Tom's girlfriend
SPOILERS
Did anyone else think that Tom's girlfriend, Sally, would turn out to be one of Simon's accomplices? I was constructing all these scenarios in which she was slipping drugs into their coffee (killing Margaret and making Tom hallucinate), messing up the wiring in the lab equipment, telling Simon what to expect from them, doing the anonymous phone calls, etc. Or if not her, maybe that other student in the class. (Or both!)
I was totally caught off guard by the ending.