Summary : Regulus Black was supposed to die, right ? But hey, Slughorn wasn't supposed to lose one of his beloved photography in one of those muggle houses he squatted...and then, a muggle descent of Merlin wasn't supposed to ger her hands on it and develop a strong infatuation to a deceased man...or was it ? And now, what if Snape and Harry had to team up to set everything right...well, give it a try ! A Regulus Black-OC, time-traveling story. Canon is respected until book five. The timeline (dates of births and all) will be respected, normally.