OK guys, the rule on this may be right under my nose, but I cannot seem to find it. We just started a new coastal campaign, and I decided to kick it off with one of my all-time faves, Sinister Secret of Saltmarsh. The party rogue managed to traverse the missing staircase treads leading to the attic, and eventually disturbed the stirges that were nesting there. The stirges scored a couple of hits, and I was reveling in the groans that were emanating from the other side of the DM screen. Where we got sidetracked, though, was when the 2nd character made his way into the attic to attack the stirges. Since stirges are tiny creatures, 2 of them were in the rogues space. What is the rule for attacking a foe that occupies the same space as a friend? Is there a penalty? Any chance of hitting the friend? Thanks!!!