I used to watch it too, then got fed up with it. Saw tonights episode and could someone fill me in on what happened to Olivers sister (I presume the ending was something to do with her). Thanks
Olivers sister died some time ago trying to rescue someone from a vehicle involved in a RTC, the scene tonight relates to the fact that Oliver's wife Tara recently died and he has been missing her so much that he didn't want to go back to the home that they shared.