Universal's eerie estates on DVD

It would be neat to see Universal's Old Dark House style thrillers, such as 1941's THE BLACK CAT (why wasn't this version included on the Lugosi Legacy?), NIGHT MONSTER (another film that should have been on the Lugosi Legacy), HOUSE OF HORRORS, TOWER OF LONDON, THE BLACK CASTLE and THE STRANGE DOOR. Unfortuntately, Universal let their rights to James Whale's THE OLD DARK HOUSE lapse. (But, fortunately, Kino had more foresight and saved the classic.)