Vallakovich Manor

What we know

Baron Vargas Vallakovich's mansion; plastered stone walls scarred and neglected (Session 11 @ 01:27:46)
Drapes cover every window; large arched double entrance doors (Session 11 @ 01:27:46)
Den: padded chairs, pipe smoke, brown bear head mount, animal pelts (Session 11 @ 01:30:32)
Baron keeps two mastiffs at his side in den (Session 11 @ 01:30:32)
Upper floor: narrow corridor; locked closet holds dissenters including Udo (Session 11 @ 01:53:01)
Cracked-open door to well-stocked personal library on upper floor (Session 11 @ 02:03:32)
Older maid greets at front door (Session 11 @ 01:28:39)
Upper-floor library: Victor Vallakovich studies; herb-lore and ordinance shelves (Session 12 @ 01:26:01)
Party consulted wolfsbane entry in herb-lore tome during Session 12 visit (Session 12 @ 01:38:07)
Second floor gallery; doll room full of Ireena Kolyana-lookalike dolls—Blinsky's Toys tags (Session 19 @ 47:04)
Attic: trapdoor from master bedroom; storage maze; Victor's workroom—skull door, All is not well sign (Session 19 @ 59:04)
Victor's mirror shows Stella Wachter on ethereal plane (Session 19 @ 01:03:29)
Mercurio found locked Ravenloft-crest tome in attic dresser—melody ceased when opened (Session 19 @ 01:09:06); later identified as Tome of Strahd (Session 22 @ 01:50:00)
Party believes: manor = house of corruption from tarokka Torturer card; attic = dark room full of still ghosts (Session 6 @ 02:52:00; Session 10 @ 01:22:29; party assembly after Session 19)

Party flattered Baron; accepted spy mission and fake rehabilitation program (Session 11 @ 01:32:39)

Unconfirmed: whether library holds Court of Wolves lore (Session 11 @ 02:03:32)
Unconfirmed: whether Khazan tower tome still obtainable for Victor (Session 12 @ 01:39:42)