yew go to yewr room then put it in there
hope it helps!
wht yew do is yew have to go in the penthouse between like 8 nd 10 nd then thts when alfred is "recharging" so yew can steal the blueprints then
How do you get all the Mechanical skill points so you can get into the penthouse??
I m The Same i cant find any of them i have three but when i go to the places at the times there not there