Deaged!Merlin Fic

I'm looking for a specific fic.  It was rec'd here once a while ago and now I can't refind it.  Merlin was deaged mentally as well as physically.  Since they were close to Ealdor, Arthur brought him there.  Merlin flipped out because he was home, but things were not quite right.  Little things like the bed was not in the same spot and Mom had more grey hair.  They do bring him back to Camelot.  There was also some hand motions Merlin and his mom did to help remind Merlin to keep his magic a secret.  Thanks!