- Angeline's Aromatics, Solitude
- Aretino Residence, Windhelm. On the floor next to the Effigy when Aventus is summoning the Dark Brotherhood.
- Bards College, Solitude; two are on a bookshelf in the library.
- Bits and Pieces, Solitude, on a bookshelf on the second floor.
- Black-Briar Manor, Riften, Ritual Room.
- Blue Palace, in Solitude
- Penitus Oculatus Outpost, Dragon Bridge.
- Rimerock Burrow, on a bookshelf
- Shrine of Talos, Windhelm, in the bedroom by the bookshelf.
- Temple of Kynareth, Whiterun, on a bookshelf in the office area.
- Temple of Mara, Riften
- The Winking Skeever, Solitude
You must perform that most profane of rituals - the Black Sacrament.
"Sweet Mother, sweet Mother, send your child unto me, for the sins of the unworthy must be baptized in blood and fear."
Then wait, child, for the Dread Father Sithis rewards the patient. You will be visited by a representative of the Dark Brotherhood. So begins a contract bound in blood.