Walking through the corridors of the heavy containment zone Must find a fast way out of here, but it's hard just on my own And here's another SCP, does it attack, or will it flee? I must get in and then we'll see Opening the keycard locked door I heard a sound, but there is no one in Just some goggles on the ground No, you can't see the SCP There are four of them and all four are free If you hear it's sound, then you'll soon be gone So come on, just make sure to put your night vision goggles on! Physically weak, has hollow bones and low muscular density Prevents their prey from falling asleep, so they run out of energy An elongated face and needle like teeth scares They hunt alone or hunt in pairs Chasing you when you're unaware The sleep killers, no they never sleep, so stay away 'Cause they are violent, but oh so silent No, you can't see the SCP There are four of them and all four are free If you hear it's sound, then you'll soon be gone So come on, just make sure to put your night vision goggles on! No, you can't see the SCP There are four of them and all four are free If you hear it's sound, then you'll soon be gone So come on, just make sure to put your night vision goggles on!