How can I get into my brother's Facebook?

[Waffles Triforce]

My brother ran away from home monday night. We think he left because we're moving around the first of June because he was asking when we were going to move that day when he got home from school. I went to his room to tell him good night around 9 pm monday night and he was gone. He doesn't have a cell phone so he uses Facebook to communicate with his friends . I want to try to find out who he's with so we can find him and get him home. The last time he ran away, he was with a 22 year old woman who gave him heroin and other drugs.We're afraid that he's with her again. He is only 16 years old so if you can help please do.

[gypsygirl731]

ask a forensic cop make sure the person who is trying to get in is a parent or legal guardian and they can ask a cop
or check in registry in the files saved passwords if they are stupid enough to save them in a registry or in a comp other then that put WORD out on your facebook looking for this brother.. ok as u need to be a adult who is a perent to get permission of suspected violence or missing for more then 24 hrs and then ask the cops they can do it .