You don't see him at night when the painting is stolen, but the next day he is in the Clown Store.
To pass the Security Room, wait until the guard's shadow is no longer on the window.
You can find out by looking at the security videos in the museum Security Room. You will need the time card from the night security guard, who is at the Clown Store.
Just run past the window when the guard's shadow isn't visible on the shades.
Wait until her shadow moves away from the Security Room window, then run across.
When the painting is stolen, get the timecard from the night security guard (he's in the Clown Store). Then you can see the theft on the videos in the Security Room of the museum.
The red-haired guard you meet at the Museum is at the Clown Store after the painting is stolen. The female guard is in the Security Room. Slip past her at night to enter the museum. The next day, get the timecard from the guy guard (at the Clown Store) and take it to the Security Room in the museum.
You, the security lady, and the Chief Inspector will review the surveillance tapes at the Security Room in the museum. You will eventually have to locate the night guard, who is trying to cheer up at the Clown Store.
the other night guard is in bobos clown shop
Get the timecard from the security guard, who is at the Clown Store. Take it and meet the Chief Inspector at the Security Room of the museum. You should be able to discover the theft on the surveillance videos from the night before.
You must find the male security guard from last night (he is at the clown store). He will give you his time card. Go back to the museum Security Room to see the video.
The security guard passes by the window when you are sneaking into the museum at night. If her shadow doesn't move away, try re-entering the Supply Room and coming back out.
The missing security guard is in the clown store. Talk to him to get his time card, then go back to the museum. Once you get to the museum, go to the security office, and then click on last night's security video.