In black widows hideout, you have to pass the guards first tho...
on the boat
You get the Key Card after the scooter chase. You cannot use it until much later. Return to the museum to receive a package. In the Black Widow's lair, the guards are patrolling, but you can reach the locked door to her treasure vault (use the key card to open it).
go tothe fifth floor go down and round and you will find a card key goto floor 3 and use card key use the teleport and teleport again then useyour key card
You find the red key card when you chase the thief on the scooter. You don't use it right away. The key card opens the door to the Black Widow's art room, where you complete the game. (You need the key from the curator of the Museum to track her down.)
to get the key for the chest in the inspectors room you have to go to the mine and their is an invisible box some were step on it then go to the place were you batted the black widow Gavin kyle Pereira
If you want to get the card key, you must use the elevator and go to 5th floor. Then done.
What you can do is use a credit card. That's what I use.
Enter her layer.
on the door inside the hideout
Use it to get into a buliding
When you find the scream you will be near the black widow's lair then you use it
He is in Bobo's clown store.