regulusblach:

Harry Potter and the Year he thought it was Snape but it was Quirrel

Harry Potter and the Year he thought it was Draco but it was Ginny

Harry Potter and the Year he thought it was was Sirius but it was Wormtail

Harry Potter and the Year he thought it was Karkaroff but it was Moody/Crouch Jr

Harry Potter and the Year everyone knew it was that B*tch Umbridge

Harry Potter and the year it actually did turn out to be Snape