"If you're reading this, I guess that mean's I'm dead. Either that, or someone's playing a really nasty joke on me." Sirius knows working in the Order is a dangerous business. Anyone could be killed at any time, and he can't risk that happening before Harry knows the truth. There are so many things he needs to tell him, and yet he just can't bring himself to say the words. So, he takes the easy way out - he writes his godson a letter, hoping that he will never have to read it. Set in OotP, after Snape's Worst Memory