And why would that surprise you? Why have you been assuming that the target was blocked or protected? It's the simplest solution (something about a razor...) to assume that there was a scum day kill.
I'm not saying that there's no possibility of the day killer being the vig, I just think it's strange that that we had no kill last night. Yes, block/protect/conversion are possibilities, but the likelihood that one of those people chose wisely is very slim. And if it was our blocker, then I hope he or she can come forward with whoever they blocked so we can lynch the killer. Preferably without revealing their role, but results are results...
Well, I won't discount the possibility that there is a Day-killer, but I highly doubt it. As a famous Horse once said, the simplest answer is often the right one.
I'm not quite sure why you think that there's a day killer, and I'll explain why I doubt it clearly.
A. I don't see any evidence. I think you may be referring to Zara's death yesterday as evidence, right? I think that was a death enacted by God's will after she neglected to put a picture of her face and her name on her holy name-tag by the end if voting as god told her to.
B. I see no precedent for a scum day-killer (or a day-vig for that matter) from previous experiences in the stables. Furthermore, such an action would seem unbalanced unless other night actions designed to stop and identify the scum also occurred during the day, which would be strange, but I guess possible. It is possible that someone's lunch could kill during the day, but again, I'd be surprised. The lunches don't sound that powerful.
C. There are three more likely actions, those being; conversion, blockage, and protection. These are simple, common actions (Unfortunately so with the first. It usually just leads to trouble.) and are therefore more likely than a day-killer.
Ooops, I almost forgot:
D. Zara would be a dumb target for the scum: she was non-participatory and not as likely to be meta-killed.