16 Signs To Tell If Your Housemate Is A Serial Killer

5. They're Very, Very Quiet

They're never loud, like ever. Most of the time you're not even sure whether they're actually in the house, leading to the inevitable threat of being sneaked up on and entirely losing your sh*t. And even when they speak, it's more of a whisper than an actual voice. Their ability to remain silent at all times sort of freaks you out, and it doesn't exactly help that you now feel like an elephant in rollerblades in comparison.