The third out of 5 secret in Aldwych, a Tomb Raider 3 London level. NOTE: If you're unsure where I got that star-looking thing (to open the door) from, here you go: Once you've gone through the maze and arrive at this temple looking-like building, there is a door at the very end that you open with two keys. And once you go there and get the item in the room, there is a dog that attacks Lara. Well if you face that room, notice the curtain on the wall to the left. Jump through it. The hole below it does not have spikes, so don't worry about it. Kudos to tombraiders.net for having found that ;).