[So in the midst of these shenanigans, anyone passing by the park will see that someone has returned from several months home in Paris - except he's clearly not in good shape, slumped back against a tree and struggling to get to his feet]
[He's beat up, clearly, but most notable of all is that there's a crossbow bolt stuck in his leg, and try as he might, he can't get it free or loose, and thus he's left to try to move and find help -- he doesn't quite recognize where he is yet, assuming that he's been moved from the safe house while he fell into a small sleep from the pain of the injury]
[It won't take long, of course, for him to vaguely recognize where he is -- and it's actually a flyer for the Modernity Club that finally clues him into where he is as he struggles through remembering everything all at once -- almost a year of memories that he'd forgotten for months]
[Of course, he'll get help soon (likely from Aramis), so if you'd rather find him after he's been patched up, he'll either be in his room resting up (door open for anyone to walk in if they so choose) or maybe he'll even try to wander to this modernity club thing if he's feeling up for it, obviously limping the entire time]