Caught the twist early on cos the confessed serial killer was way too young to be real killer. So if he knew the details then he got it from someone who knows the real story and there are only two possibilities: the real killer or the detective.
When the detective and the alleged killer met at the precinct and the latter whispered something to the detective, then it was clear. They must know each other. And they say the rest is history. If you want to know the details, you have to watch till the end, then again it was clear from that point on. Also, I find it ludicrous how they were glorifying/idolizing the killer.
It started out really great and was rooting for the main couple. BUT then it got draggy and stupid. Skipped the main couple's scenes and was on the point of dropping if it wasn't for Veronica Park. Loved her!
When the detective and the alleged killer met at the precinct and the latter whispered something to the detective, then it was clear. They must know each other. And they say the rest is history. If you want to know the details, you have to watch till the end, then again it was clear from that point on. Also, I find it ludicrous how they were glorifying/idolizing the killer.