Return to the peak of the blue slate roof.

Turn right, and climb up onto the tan ledge that runs around the edge of the tower.

A mercenary approaches from inside the building.

If you like, you can hop back down to the roof to shoot at him. Just be careful where you step so you don't slide down.

Climb back onto the tan ledge and head to the left. A second mercenary comes around the corner toward you. Kill him as well.

Now move into the tower and find the movable block at the center where the four paths converge. (It's outlined in the screenshot above.)

Pull the block twice.

Then use it to climb onto the ledge above on the right.

In a shallow depression behind the slates, there's a large medi pack.

When you have the health pack, climb out of the depression and step back as far as you can without backing up into the hole. Now take a running jump across the gap. Continue to hold Forward but do not press Action while Lara is in the air.

Lara's feet will nick the top of the blue slate slope on the other side, but she should land in the depression beyond it instead of sliding back.

Here you'll find SECRET #4—the CATHEDRAL KEY.

NOTE: You won't actually use this key, and it will disappear from your inventory, but it counts as a secret toward the bonus level.

To get down, stand facing the wall and backflip out of the depression onto the shingled slope.

Slide back, grab the edge, and drop to the ground.

[Return to the Thames Wharf Walkthrough]