Cheats, Codes & FAQs
7.2.4 - Episode 2, Part 4 'Drowning. When you help Bishop find his sub. Just follow him around and kill all the guys that come after you, then go find the hidden evidence. Swim all the way to the end, behind everything. Behind the mountains where all those things are falling, then turn on your EDSU goggles. You'll see a barrier. Swim up to it and you'll find the hidden evidence.