getting into marks house in Still Life

I have the lockpicks. I am trying to get into his house. I can't figure out what to do with the lockpicks though. I have been clicking on every slat coming down and changing the picks and nothing is working. please help.

Did you try looking at the walkthrough here? I assume this is Still LIfe I? Sorry, I haven't played it!

Walkthrough Still Life

There are also Still Life video walkthroughs that may help you if you are still puzzled after looking at the walkthrough here on GameBoomers.

This is a difficult puzzle that I went straight to the walkthrough for, and I know it confused a lot of other people too. Take a look at this video walkthrough here starting around 8:41. There are other videos of this on YouTube also if you care to look for them.