The first one is a beautiful desk, probably made in the 1920's. I am not too good with woods, but this is either mahogany or stained to look like. I love all the cubbies and drawers. When I inherited this it still had all the fun office things in the cubbies from 1930-1960's. While my Mom had this desk it sat in their entrance hallway. I never really investigated it then, but always admired how the light brought out the beauty in the wood grain.
I love mysteries too...and closed doors and drawers reveal mysterious contents.