The key that the crook drops in MacGuffin's says "back room," but it doesn't fit the storage room there. Go to Good Deals next door, where it does.
*Use the toy robot to keep the lights on by putting it near the camera.
After you surprise the crook in MacGuffin's he drops a key. It doesn't fit the room at MacGuffin's but it does fit the back room (Employees Only) at Good Deals next door.
*You will need to use the toy robot from the toy store to keep the lights on in the left side of the store. Put it next to the motion-sensor camera near the door.
It fits the back room (Employees Only) at the Good Deals store. Use the toy robot by the camera to keep the lights on.
There is no key to MacGuffin's or its back room. The key that you do recover fits the back room at Good Deals next door.
Once you have the key that says "back room" you only have to go next door to Good Deals, and use the toy robot by the camera to keep the lights on.
Dont do it
It doesn't fit the back room at MacGuffin's so you should try next door at Good Deals electronics. Use the toy robot by the camera to keep the lights on.
There is no back room there. Someone answered another question incorrectly. The "back door" key fits the Employees Only room at Good Deals. You will need to use the toy robot next to the camera there to keep the lights on.
Not the back room of MacGuffin's, but the Employees Only room at Good Deals next door. Use the toy robot at the camera to keep the lights on.
You can exit the mall through the security room, and the blimp is to the left of the mall.
You do not get that key during the quest. The key that is eventually dropped in MacGuffin's fits the back room at Good Deals next door.
It doesn't fit the door at MacGuffin's. Try next door at Good Deals. You can use the toy robot to keep the lights on.
You don't have to, and you can't. Just a random blue arrow there.
After he knocks you down in the Carnival Costumes store, go to MacGuffin's and hide there. When he enters, you can surprise him. He gets away, but drops a key marked 'back room.'
Exit the mall through the security room, then go left to find the blimp.