Deus Ex - Human Revolution tip for Malik's Quest

This is a mini post just to help people out on something that has been touted as a glitch but it's more of a "quirk".

When Malik sends you to search Lee's apartment there are a number of things to find, well documented elsewhere on the web.

All I'll say to avoid spoilers is; close Lee's front door after you have entered the apartment.. all will literally become clear.