No matter how much Cain tries to either catch up with his boss or try to predict his next move it wasn't just possible.
Enzo was always two steps ahead of him and he only figured out what his boss plan is after he must have accomplished it.
After Enzo invited him into his house, he still could not let go of the thought just like that.
He knew from the beginning that there has to be a reason why he asked him to come into his apartment.
Cain went house that night and still couldn't get the thoughts off his mind although he came back and saw that Christie was safe and sound but yet he was not satisfied.
He wanted to know his boss reason of allowing him into his apartment.
Cain had noticed that he received a call that night before he finally allowed him to leave and it seems to him that the call must have be the reason why he was there.
Was there anything Enzo was suspecting him for, or even Christie?