There is English support via the English interface.

Dlc not activated, it's look like they protected via some online(or game >?) mechanism. I'm manage to unlock all dlc dioramas ( copy catalog inside diorama main folder ) and they appear in shelf, but they need a index file like Crime Scene_Index Shelf. Even if i'm copy this files it's always delete again and again. Also Diorama menu always give to us see BUY button unstead Installed one T_T