It was odd how Oliver and Laurel just sort of dropped it. Especially Oliver at the end saying he blinded into believing Laurel about Blood. Nothing about Blood makes sense. The missing file, the dead mother, his connection to Gold (that got pushed under the rug after Felicity dug up that they've been in contact since). Also, Daley as Brother Blood makes no sense. His motives wouldn't make sense at all plus why would he kidnap Laurel just out of nowhere. And how would Daley know about the Mirakuru? Everyone that does so far has connections to someone on the island ala Slade.