복선

The locket nobody could open

Slytherin’s locket passes through a cave, through Regulus and Kreacher, through Grimmauld Place, and through Umbridge’s neck before Ron destroys it. The note signed R.A.B. is the middle of that trail, not the start.

복선

1해리 포터와 불사조 기사단 · Cleaning Grimmauld Place
The Order finds a heavy locket nobody can open and throws it onto a rubbish pile. It is one cursed object among many in the Black house. Kreacher later steals things from that pile.
2해리 포터와 혼혈 왕자 · The cave, and a note in a fake locket
Dumbledore and Harry drain the basin and take a locket. It is a copy. Inside, a note signed R.A.B. says the real Horcrux has been stolen and will be destroyed. The initials are not explained in that book.

회수

해리 포터와 죽음의 성물 · Kreacher’s story, then the forest

R.A.B. is Regulus Arcturus Black. He made Kreacher take him to the cave, swapped the lockets, and died there. Mundungus later stole the real locket from Grimmauld Place and lost it to Umbridge. Harry steals it back, and Ron strikes it with the sword of Gryffindor.