Cain drove straight to his apartment and as usual the lights were on showing that Christie was back, he tried his best to hide his wound so Christie won't have to question him about it.
In as much as he always has a disagreement with Christie but deep down she cares about him the same way he does for her avd if eventually she got to find out that Enzo was behind it, she will want to get back at him even in the littlest way she can.
And that would turn out disastrous because she is no match for Enzo so he has to avoid it in any possible way.
Cain walked into his house and saw Christie in the sitting room as always, Cain knew that it was her way own of waiting for him to get back from work though she would never admit it.