Sherlock eyed the monsters and, honestly, had no inclination to stick around and try to beat them back, let alone stay with Eric and Rose, people who he honestly didn't get on very well with. So he did the only thing that he could think of doing in this sort of situation, with no means of defending himself and no real reason to stick around.

He booked off in the other direction, long legs meant for sprinting and for keeping the chase whenever need be. For a detective and a smart man, he had an odd amount of physical ability and limitations were not a thing that he was very familiar with.

Of course, for mere reason that maybe it wasn't good form, he was searching for an exit, a safe spot perhaps, or maybe even a better weapon when he stumbled across a larger group of the undead monsters. And then he really ran, scrambling to pull up a metal crowd control pole and flinging it backwards at the things. This was not good.