The inhabitants of Mystery Manor are not your typical Sims. The garden doesn't get much use or love as they are not the type to step outdoors during daylight hours.
That's it for the story, sorry. Onto the pics.
Store objects used throughout
Spiral stairs from Hexemeter at TSR
The Fiorella Flowers by Goodywood here on MTS
Sorry about the crappy ceilings. I forgot all about them until taking the pictures and I've taken long enough on this entry so I didn't bother fixing them.